This is so random but I read this book when I was like a pre teen (I’m 19 now) and I need to remember what it was called! The plot was like these two girls, this one of them had like moved in because they shared a dad or something. She was a bit older than the other one. The other one was like a young ish girl that had like problems arguing with her parents and stuff. She wanted to go to this party and I believe the parents said no. Then the older girl (think she could of been a babysitter? I can’t remember) was like I’ll help you!!! And got her dressed up and stuff to go to this party and I think the other girl ended up having a horrible time. Girl A (younger girl) ended up going home and crying and girl B (older girl) like told her parents she was like crazy and stuff and girl A was like so mad. Girl B turned on girl A abd I really want to know the name of the book. if you can help that would be amazinf !!!!
Lost Classics of Teen Lit: Name That Book! 