Calista was unable to understand what Valerie was doing. One second she was all like she would be staying behind and the very next second she had changed her mind. But Calista trusted her judgement. She had firm belief that whatever Valerie had planned must have been thought of after careful evaluation of all the alternatives available. She wouldn't put all of their lives in danger just to save her own life. Valerie was not that kind of person.
So, she agreed in a blink and gave command of the escape operation to Valerie and asked the girls to get ready as well.
Before Alissa could open her mouth to show her resistance, Valerie had already caught up to her and was running away while dragging Alissa with her. She was not going to see another student fall based on stupidity. She understood her emotions but she wasn't going to let her do something impulsive like that.
