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i just moved into my dorm and I wanted to hear some advice cause I'm so anxious. I already made so many mistakes here I'd just like to avoid more. ╥﹏╥ ╥﹏╥ ╥﹏╥

There's this one girl who I find extremely annoying, she doesn't respect boundaries and gets all in my personal space when we literally just met. She's nice but she can't read the room and gets nosy with stuff, she asked me why I got therapy and I said it's personal but she keeps trying to ask whenever she gets the chance (it was for self harm and she even pointed out my scars when it was very obvious I didn't want to talk to people about it)
The problem is that she's a part of the friend group I'm in and if I tell her to stop talking to me it's going to be very awkward and I do not want to feel uncomfortable in my own friend group. I can tell her to maintain some space between us but she literally cannot read the room and it gets so frustrating. She immediately makes some cringey sad face like a fucking kid if I just tell her some things are personal and I want her to respect my boundaries I get that she was a loner before and she was also kinda bullied but I'm sorry I do not care.
literally, this is too much for me. Why do people gotta act like this???? Someone please give me some advice I'm dying here