At first, when new-girl Ruby imitates Angela, Angela takes it in good part: they must be kindred spirits. But as she realizes that Ruby's claims (only Angela was really a bridesmaid) aren't true, Angela is ever-more annoyed with her mimicry. A sensitive teacher helps Ruby see that doing her own thing is a better way to make friends. Rathmann plots the evolution of a friendship going sour, primary-grade style, with sensitivity and just enough exaggeration to provide humor. It's too bad that the teacher is needed to help Ruby understand the effect of her behavior, but her gradual realization is believably drawn, and children have been known to profit from good advice. Like the text, the simple illustrations nicely capture the nuances of the characters' feelings. A solid debut.