Hitting and kicking a younger child... how to handle?
I recently started looking after my nephew a few days a week while my SIL goes to work (she's subbing, so, some it can be 4 days a week, or just one or none- not regular). My DD is obviously used to being home alone with me and having all my attention. My nephew is used to the same! He is 5.5 mos old, not yet mobile, and kind of high maintenance (my SIL tries really hard to keep him on a schedule, which means she spends what seems like hours bouncing him and walking him around and stuff, when I would just feed him or let him sleep, cause to me it seems he's either tired or hungry! I noticed these things in the two weeks that we lived with them.).
So, today, every time I put him down (like to pee) DD would go over to him and hit or kick him. She's pretty much totally fed up with him. I can understand her not appreciating him being around because it means she has to share me, but obviously, her way of showing it is NOT ok. I have no idea what to do though. She also takes away every toy I give him.
I totally caught myself this afternoon getting REALLY angry with her, and almost exploding at her, because it just pissed me off so badly that she was literally just laying down on the bed with her feet to him and kicking him in the head (while I was peeing- which I obviously tried to finish as fast as I could to rescue him!). I tried putting her in a time-out, but she was just getting up and running away. And, she just laughs when I hold her legs or something when she kicks him. I just don't know how to handle it.
I'm so glad now that we HAVEN'T gotten pregnant before now, because holy heck, I don't know what we would have done- her jealousy is out of control!
Anyone have any advice on how to proceed? I just feel totally clueless about how to handle this.