Not sure if this has been pointed out yet but if you trigger both events at the same time this girl gets stuck here and any further development regarding attending to school is imposible afaik cause the "cutscene" gets stuck in this part everytime.
The two events being triggered are:
-Ms. Amos event where her daughter is being bullied
-Sarah's near final event where Pito bullies Fred
I think the cause is cristal clear when playing but the image doesn't really do it justice.
TL;DR the girl that buillies Ms. Amos' daughter gets stuck cause Peter is one space lower when triggering Pito's bullying. This probably happens with other cutscenes involving Pito since Peter would be one space lower aswell.