True (...Sort of) (AR 6.0, Level 3.4) by Katherine Hannigan, the author of Ida B, is about an unconventional character who doesn't know why she seems to get everyone angry.  Misunderstood, everyone keeps putting Delly down.  Finally, she decides that she will act out!

Brud is a terrible basketball player.  The problem is that he loves basketball!  How can he ever become good at the sport that he loves?

Then Ferris moves to town.  Delly befriends her because she does not speak; Ferris does not criticize her.  Brud befriends her because Ferris is an amazing basketball player and teacher.

If you are a person who doesn't quite fit in at school, you may find a friend in True (...Sort of).  Though Ferris has her issues, she accepts her two new friends when no one else will help them.  And what is friendship if not for acceptance?  Enjoy this great book!