We have a 2 year old and a 6 month old. We like to give the younger sister time on her tummy to learn how to crawl, but often while she is on the floor her older sister will come harass her. The most common thing the older one does that we don't like is she will squish her sister by lying on her. Sometimes the younger sister seems okay with it at first, but then her face will get smashed or something like that and she will cry. So far we have been putting our older daughter in time out when it happens, but so far her behavior hasn't changed.
I see a couple possibilities. 1) Older daughter is looking for attention and gets it when we rush in to stop her. 2) Older daughter wants to play with her sister and doesn't know how to do so in a safe manner. 3) Older sister is jealous of the attention younger sister gets and is trying to establish dominance over her.
What do you think is going on and what do you recommend we do about it?