I Cant remember the Name of This Book.?

I think is was called small world or something similar to that. It was about this girl who was inbetween childhood and old age and she befriends (or dates i cant remember) This boy who has an alcoholic mother. And it tell her story about her not fitting in school or within her family. I think he sister was kinda aim to her too. Can anyone help me??
Answers:
im clueless
no idea


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