Dotty by Erica Perl
Ida and her pink polka-dotted animal friend Dotty are doing okay at school until all the other kids decide that they’re too old for imaginary friends. When Ida has a conflict with another kid and Dotty attacks, Ida's teacher explains why it's not okay to hurt other kids. At the end, the teacher walks out with her own imaginary giraffe pal. A little close to home for this teacher, but so great.