Passengers must keep silence (Patreon)

On this scenario Mina has boarded a train looking for a mysterious monster that has been seen causing problems to the locals.

There is no clue on what his appearance is, but there has been sightings of a suspicious individual that sometimes boards the train.

Hushi makes sure to let Mina know that there is zero tolerance with noise on the train as it is used as a resting zone for the locals on their long shifts, and advises Mina to not fall asleep while she investigates the train.

Will Mina found out if this individual is the Monster that has been causing problems or would she fall asleep and be too late for her?

*Update*

Added a follow up picture to this. Now what should happen next?