Executing the Plan
Shiroi found himself inside another building but he didn't know what to do next. In the end, she just hid and tried to steer clear from the glances of the other students who were out for blood. There were a couple of them who've already formed their groups and they were looking for easy prey.
There were multiple times when she wanted to reveal herself and attack one of the groups but she doubted whether she was capable of achieving such a feat. In the end, cowardice would always get the better of her and she missed plenty of opportunities to get out from her hiding spot.