Help!! I don't know what to do with this hair

Hey everyone, just to make a long story short my niece who is training to be a hairdresser came by my house the other night and had this tool that is supposed to thin out your hair a little bit. My hair is always thick so I said okay will try it, turns out she took a lot more off then she should have and it's only on one side, I know I have to go to the salon to get it fixed but I just have a question on until I can go next Saturday how to make this one part to stop sticking out like this this is so bad. Does anybody know if I'm going to have to cut my hair really really short to fix this cuz I really don't want to. The first two pictures are how she cut the one side the third picture is how my hair use to look