It's hard to imagine her in the bully position as she didn't showcase any domination symptoms beside light teasing mhhh >_<
But awesome twist if she was ! (heard a study about how bad adults were to find the bully, when children could almost always tell without error, from mere photos)
I can believe she did a bit of bullying, but Id imagine there would be almost no mal intent, and likely a scenario of going overboard more than likely.