If she isn't biting or attacking the other dogs then I'd think she is playing albeit too roughly. She needs to learn play-manners, something that starts being taught in the litter. If she isn't injuring the other dogs she does this to, and you don't think her intent is to injure them, then let them teach her a time or two how much they like her play. One of my fosters was very rough (still is with new dogs) in her play. She mounted, boxed, trampled and pulled on ears and jowls. I chalked most of it up to her being deaf and not learning in the litter what it means to play nicely because she'd never have heard a puppy's yelp nor her mama's growl. She is also dominant but not in a threatening manner. She just doesn't know how to behave like a little girl should at first. She's learned a good bit through the other dogs teaching her what is and isn't acceptable. Basically, I don't think there is anything YOU can do to mold this behavior except to scold her when you see her doing it. However, this could backfire and make her think that playing is bad, not just playing roughly. I prefer to leave such matters up to the dogs to sort out and only intervene when things look like they may become serious enough to cause bodily injury.
