Sarah a bully?

Anna is in town for a week and she was at the house yesterday. It was great to see her daughter Brianna, 10 months, and Sarah playing together. The last time that they were together they just looked at each other. Here is a video of them playing. My question is: Is Sarah going to be that bully on the playground? Or that little girls that doesn't want to share?

Thank goodness that she doesn't know any better or you would really think that she took her down on purpose. I feel bad for Brianna but we got a kick out of this video.