Little Sister - Part 3 (Patreon)

Another continuation of this story, from one of our anonymous patrons. Picture property of ABDreams. 

As much as Heidi hoped Sarah was joking about everything else, the other woman gave no signs about backing down from those, either. 

Even though it was easy to get bored from time to time, Heidi valued her time alone, getting to sleep in as late as she wanted with nobody judging her, stay in her PJs all day if she felt like it, go wherever she wanted, do whatever she wanted; sure, every now and then, Andrew surprised her, but that wasn't always a bad thing... At least, not until the last time.

Now, she was quickly learning that things were going to be very different from then on. Now, she was never alone, not unless she was in her room, in bed during a nap, or after her ridiculously early bedtime, and even then, her door was left open a crack, so she could be looked in on at any moment. If she ever dared to act more mature than a toddler, she got a lecture, which either ended in a spanking or a threat to tell Sarah about it when she got home so that she, or Andrew, could spank her... Or, if she was really unlucky, both.

It was quite a big change, going from being an adult to a baby, constantly cared for by her 'babysitters' or her 'big sister'. Never having to worry about cooking for herself was nice; that was about all. Sarah hadn't been able to find a stable, full-time babysitter yet, so, over the past few days, Heidi had gone through several. The older woman who had looked after her the first day wasn't too bad, but after that, there had been some girls around Heidi's own age, right out of college, who got a little too into it, insisting on spoon and bottle feeding her, and even forcing her to crawl instead of walk... And they all seemed awfully excited about the prospect of getting to punish her, using any excuse they could come up with to spank her, or send her to the corner, or give her a mouthsoaping.

Chances were pretty good, at this point, that one of those girls was going to wind up as her regular babysitter; she couldn't let that happen. Whenever she tried to complain about it, Sarah would tell her to hush, or even put her pacifier in, and remind her that 'grown-ups' knew best. It was going to take more than that to get out of this... She might even have to tell the truth.

As much as she didn't want to do that, she started coming around to the idea more and more as the week wore on, and Sarah seemed to become more and more interested in the state of her diapers. Whenever she came home and the babysitter gave her a status report, she took care to ask, specifically, "Did she make a poopy today?" while Heidi blushed and squirming on the floor, pacifier in her mouth and cartoon blaring on the TV in front of her, wanting to answer herself, since that was such a personal, humiliating thing.

The answer, of course, was always no, which made Sarah shake her head, checking Heidi again several times before putting her to bed, telling her she would have to go sometime. That was true, and Heidi could tell that time was quickly approaching... And, even if she wasn't under constant surveillance, she couldn't do anything about it, since the bathroom doors were now locked, with everyone other than her that spent any amount of time in the house having a key. Even if she could have snuck away when they were in the bathroom themselves, she had no access to her own car, and if she went to a neighbor, it would be with her diaper fully visible, since there definitely wouldn't have been time to grab pants for herself before her escape, and that would probably lead to a lot of questions, during which her babysitter would have time to see she was gone, look out the door, and find her.

She'd had no choice but to wet herself, several times, since this had all began, and while it was gross, she could live with that; good thing, too, since her early bedtime meant she'd gone to sleep in a soggy diaper every night since this had begun, not to mention the times she'd gone while in time out, or her caretaker for the moment just didn't feel like changing her right away, and she had to sulkily wait in her rapidly cooling padding until someone else decided it was time for a new one.

Messing was a step too far, however. It had been inevitable, yet she'd still held out hope that Sarah would change her mind about all this before it got to be too late, or she'd find some other way out. So far, that hadn't happened, and time was very quickly running out.... Even faster than she thought.

"All right," Sarah announced after dinner one night, leading Heidi to her bedroom. Andrew had worked hard to transform it over the last few nights before bedtime, and Sarah had ordered packages of the thick, crinkly diapers Heidi had found in her closet, starting this whole thing, along with plenty of cuddly toys; her room was quickly transforming into a nursery before her very eyes. "I'm going to read you your bedtime story, young lady, and if you haven't pooped your Pampers by the end of it, I'm afraid I'll have to give you an enema before I put you to bed... It just isn't healthy for you to hold it in so long."

Heidi stared into her roommate's eyes, horrified, certain she had to be joking; as always, she wasn't. Sarah laid her down on the floor, massaging her full and aching tummy for a few minutes before sitting down next to her with a worryingly thin picture book and began to read. Thankfully, Sarah took Heidi's pacifier out before starting, giving her one, final chance to stop this.

Before she could begin, she felt a cramp, causing her to squeeze her thighs together with a gasp, shocked at how quickly the urge had hit, and how badly it had gotten already. "Legs open, sweetie," Sarah shook her head, reaching down and prying them apart. "Just let it happen... It's all right. This is what babies like you do."

Heidi stared at her, aghast, losing a precious few moments while she tried to compose herself. She'd been told she was a child so many times over the past few days, and had basically no chances to prove otherwise... Now, if she wanted to prove she could follow instructions and be obedient, she'd have to do the most babyish thing imaginable; if she didn't, Sarah would force her to do it anyway. She had to speak up, to admit the truth...

"S-Sarah?" she gulped. "I-I have to tell you something."

Sarah glanced over from her book again. "Heidi, you can't stall forever," she shook her head. "And spread your legs! Honestly, do I need to buy you a spreader bar?"

Heidi had no idea what that was, though she was pretty sure she didn't want one. Before she could say anything, however, another cramp hit, and she winced, chewing on her bottom lip as she felt her body betraying her, her guts giving a push when she was fighting to make them do anything else, feeling something edge out into her diaper, leaving a sticky smear under her backside, to her horror. It was starting... Last time, she'd had the suppositories helping her along, and it had been over in a matter of seconds, although those seconds had felt like hours as they happened. Now, she had a little more control, for all the good it did her. Already, she could tell by squirming on her back, her diaper would be considered dirty, but she'd barely begun. She was almost scared to find out how bad it would get, yet she knew, ultimately, there wasn't much she could do about it. She could feel her muscles still working, despite her best efforts, the mess in her diaper slowing growing and spreading.

"I-I'm not a baby!" she squeaked out. Sarah smirked down at her, making her blush, wondering if she knew what was happening, if her mortifying little secret wasn't even really a secret, if she should just stop fighting and let it happen, to make things easier on herself. "I-I didn't want any of this," she admitted. "I-I... I just went along with it because Andrew was into it... I'm sorry, I-I was trying to steal him, and it went too far, and..."

She stopped herself with a groan, the slow advance in her pants momentarily trying to speed up. "Really?" Sarah looked at her. Heidi was too embarrassed to meet her eyes, knowing what was happening right then, and hoping that she had been wrong about the other woman knowing as well. "Andrew!" she exclaimed, standing. "Andrew, come here!"

Heidi watched Sarah leave, heart pounding, not certain what to expect. It was hard to think too much about it, in the middle of what she was currently doing, hard to feel like she'd done the responsible, mature thing at last when she was on the verge of completely filling her pants. It didn't help when Sarah and Andrew returned, standing over her.

"Does this tempt you?" Sarah asked, gesturing down at her roommate. Andrew stared down, catching Heidi's eyes for a brief, intense moment.

"Yes," he admitted, making Heidi's heart flutter unexpectedly in her chest. He knelt down, making her wiggle in place, wishing she was doing anything else at that moment, then, to her surprise, pushed her shirt up a little and blew a raspberry on her now exposed belly. "Tempted to eat her up!" he exclaimed.

The shock, and vibration, did Heidi no favors, and, even though she was more determined than ever not to let go, now that he was right next to her, it wound up being too much. She grunted as the slow slide turned into an avalanche, her cheeks growing darker and darker while she felt her diaper expand beneath her. Even without the benefit of a suppository to blame it on, she no longer had any control as her body slowly but surely did its work. Her brief feeling of pride in herself for doing the right thing was washed away in an instant; she felt, every inch, a toddler, at best.

"There," Sarah knelt down as well, making Heidi squirm in her swollen, squishy, inescapable diaper, "doesn't that feel better? I'm sure it's much more pleasant than holding it in all that time." She gave the bulging diaper a pat. "Don't worry, I'll take better care of you from now on... Me and your babysitters are going to watch your diet much more closely, to make sure you do this every day, like a good, healthy baby. Now, let me get you ready for bed."

Heidi frowned as she watched Sarah get a fresh diaper, not sure if she had believed the story or not. Did she think it was a lie, told to try to get herself out of having to poop herself? Or had she known all along, and was just waiting to hear Heidi say it? Either way, it hadn't worked out the way Heidi had hoped at all, as Sarah cleaned her up and put her into an overnight diaper, tucking her into bed, giving no indication that anything had changed, that Heidi would be allowed to grow up again the next day... 

And now, Heidi had no bargaining chips, nothing else that might work to convince Sarah to stop all of this. Sarah either thought she was willing to make up stories - so she shouldn't trust anything she said - or knew the truth - and was perhaps continuing this, or doing it in the first place, as a punishment. Whichever it was, it hadn't seemed to change her resolve about treating Heidi like her little sister. If anything, it would mean Sarah was less likely to believe her from now on, or would be more willing to dish out punishments... More than likely, all this had done was make things worse.