Story concept: Rhea (Patreon)

Here is an Oc that I haven't introduced to you yet, I first want to know how you find the concept.
And I don't hide to have been influenced by the Primal series, a great series that I recommend. ^^

A long time ago in a fantastic prehistoric time, there lived a tribe of hunter-gatherers and among them was Rhea.
A young woman who spent her life trying to improve herself so she could hunt something other than small animals.
One evening, the tribe was lucky enough to see a rain of stars crossing the sky and one of them crashed further into the forest.
Driven by curiosity, Rhea went to the place where the star had fallen and found a glittering stone in the heart of a crater lost in the forest.
She wanted to approach it to inspect it, but it was jostled by an explosion of energy emitted by the stone and destroyed.
Rhea had nothing more to see and returned to her tribe, but as the days passed Rhea grew larger.
She doubled in size in just two days and continued to grow throughout the week, until she was an incredible 12m high...