Flight of the puffin / Ann Braden.

One small act of kindness ripples out to connect four kids in this stirring novel by the author of the beloved The Benefits of Being an Octopus. Libby comes from a long line of bullies. She wants to be different, but sometimes that doesn't work out. To bolster herself, she makes a card with the message You are amazing. That card sets off a chain reaction that ends up making a difference in the lives of some kids who could also use a boost-be it from dealing with bullies, unaccepting families, or the hole that grief leaves. Receiving an encouraging message helps each kid summon up the thing they need most, whether it's bravery, empathy, or understanding. Because it helps them realize they matter-and that they're not flying solo anymore. --bokus.se