Don't show her the comments here, unless it gets really bad.
Just go to her calmly and be like all sweet. Like mum ily so much for wanting to help me settle in, and you know ill always need you and I'm glad you'll be there to fall back on if I need you? But you're only a phone call or car journey away. I've spoken to some friends and they all say they're brothers and sisters who've went to uni never had their parents stay, they all said they just helped for a little before leaving, like everyone else's. I don't want to be awkward there, the only one who's parent stayed over! We will probably all go out partying the first night, or hang out and just chat in our floor. And I won't be able to if you're there, will I? So ik you mean well and iim glad you care so much, and I'm so lucky to have you, but you don't need to stay over! I need to grow up and I will. So you can come and help me unpack, we can get ssome lunch somewhere but then you need to come back home, so I can mingle with the people iongoing to be with for a whole 3 years?! If I don't hit it off on the first night, I never will.