Hi everyone! I have two British Shorthair cats (both of which are female). One of my queens gave birth to her first litter a few weeks ago and I noticed that her sister will try to take care of them. But a couple of days ago, I saw her batting at one of the kittens like she wanted to play with it. She obviously didn't hurt it because the kitten didn't cry or make any sound like he was in pain, but I'm a bit worried that she will hurt them. This has happened a couple of times now. Other than that, she has been really sweet to them. The little ones' mama completely trusts her with the litter and will let her curl up with them when she is eating or using the litter box. Should I separate them, or will my kitty realize that they are kittens after a while?