Just Lucky — Melanie Florence

Lucky loves her grandparents, and they are all the family she really has. True, her grandma forgets things…like turning off the stove, or Lucky's name. But her grandpa takes such good care of them that Lucky doesn't realize how bad things are. That is until he's gone. When her grandma accidentally sets the kitchen on fire, Lucky can't hide what's happening any longer, and she is sent into foster care. She quickly learns that some foster families are okay. Some aren't. And some really, really aren't.