Small as an Elephant

Jack's mom is gone, leaving him all alone on a campsite in Maine. Can he find his way back to Boston before the authorities realize what happened?
(Ages 10-14)

Ever since Jack can remember, his mom has been unpredictable, sometimes loving and fun, other times caught in a whirlwind of energy and "spinning" wildly until it's over. But Jack never thought his mom would take off during the night and leave him at a campground in Acadia National Park, with no way to reach her and barely enough money...