Heartwarming / Be Careful What You Wish For

• When Samantha undoes her second wish (which erased everyone else from existance), she goes through an It's a Wonderful Life-like sequence where she runs around happily greeting every single person she sees, even if she can't stand them most of the time. It's one of the only moments in the book where we actually see her happy for any length of time.
• In the basketball game after her first wish, Samantha actually has a good time even though she hasn't gotten any better at playing. She actually makes a basket, and she doesn't even care that she's going to lose by a lot, because she's actually having fun. She gets so into it that she starts acting as a cheerleader, rallying her teammates.
• Her bond with her pet dog is also very sweet. Samantha clearly loves him to bits, and he's pretty much the only good thing in her life.