Pony to Remember — Lois K. Szymanski

Jenny's world is crashing down around her. Her family has to move away from their farm, and that means saying good-bye to her horse, Magic, and all the other animals Jenny cares for and loves. Jenny will have to live in an apartment in town, make all new friends, and go to a new school. She is sure she will never be happy again. But that's because Jenny doesn't know what it's like to live in a different place . . . and she's in for a lot of very nice surprises.