There is a serious problem for kittens who are born without siblings. They don't have anyone with which to learn what is appropriate play. They tend to be overly aggressive and lack boundaries Ella has two strikes against her because her mom is overly aggressive and lacks boundaries as well, so it these types of behaviors seem more appropriate to her.
So we are reintroducing the hand monster which is not afraid to do things to her she doesn't much like (but that doesn't hurt) so she can learn that when she cries out "no" that play stops. Foot monster, however, is her favorite adversary. It moves slowly across the floor, it is kitten sized and it rears up for combat.. It is her new favorite playmate, much in a way a sibling would be..
and fortunately it does occasionally win the wrestling match - which helps her learn humility.. or at least how to lose gracefully.. or at least how to lose... OK fine, she runs away when she doesn't get her way.. which frankly is not a bad thing.. because she very well could turn more aggressive and work at trying to hurt me into submission.. (little does she know she can do that by being so darn cute)