The Cabin at the End of the World - Tremblay, Paul - Paperback

Seven-year-old Wen and her parents Eric and Andrew are vacationing at a remote cabin on a quiet New Hampshire lake. Their closest neighbors are more than two miles in either direction along a rutted dirt road. One afternoon, as Wen catches grasshoppers in the front yard, a stranger unexpectedly appears in the driveway. Leonard is the largest man Wen has ever seen, but he's young and friendly and wins her over almost instantly. Leonard and Wen talk and play until Leonard abruptly apologizes and tells Wen, "None of what's going to happen is your fault."