Am I over reacting?

I’m 30 weeks and have been staying with family for the past few days. My youngest sister is there she’s only 11 years old. Two separate instances today where she has been physically violent towards me.

Earlier we were playing a game and she got annoyed at something and elbowed me then later this evening she was annoyed about what I was putting on the TV so then she tried to kick me in the arms.

Obviously there’s no harm done to my baby. But I still feel really violated by what’s she done and thinking to cut my stay short and leave tomorrow. I tried explain to her that what she did was wrong but she doesn’t seem to understand and is being defensive about it, almost like her ego won’t let her admit she did wrong even tho I’m pretty sure she k knows that it isn’t okay to touch somebody else in that way.

This all happened in front of other family members who are all adults and nobody even said anything to her except me. Like they didn’t wanna tell her it was wrong to do that. I just feel like the whole house is bad vibes now I was planning on staying till Friday but honestly don’t think I want to anymore. But I also don’t wanna leave and regret it bcos maybe I’m just being overly sensitive. Do you think I should stay and then if something happens again leave the next day? Or just book my ticket now and leave tomorrow?

I Honestly can’t tell if I’m being ridiculously overly sensitive or what. But this really upset me.

Also do I tell the other family members that I wished they woulda backed me up? Or shall I just leave it. Cus I’m kinda annoyed at them too for just not saying anything.