I was also a teen with cp. my whole left side is effected. you just find a way to make it work. I know what its like to be the only kid riding the elevator when you feel like your disability is far less severe than the others you see. it makes it hard to even say "I hurt" or " I cant do that" because you feel like well most of the cp you see or hear about are so much worse. she just needs to talk to the people around her, teachers, principles, you guys, and make a plan that is comfortable socially and makes her feel normal, while also making life just a bit easier.