We could gossip all day about why little Johnny might be being a bully to little Suzie. We could measure out his home life and his hormones, but maybe he just likes her. Maybe that's why he'll hit her, or pull her hair, or cut the buttons off of her dress. Or stab her with craft scissors. It could have been revenge, that would be a cool motive for little Johnny. It's all hypothetical anyway.
The doll that drove her dream car off the cliff definitely got tag teamed by the Power Rangers at a Ninja Turtle frat party. She just hasn't gotten over it. It doesn't help that she's been banned from the Polly Pocket luncheons.