We went through this last year. DD phoning at 4.00am in tears because flatmates were waking her. She was boring as she did not take drugs, so had no right to sleep.
Looking back it was bullying, pure and simple.
This year is totally different. DD is settled and happy and has found "her people".
If she is on the right course, I think it is worth trying to get over the first year.
The important thing to do, as others have suggested, is to get a move. But to the right flat. Which means that you have to build a head of steam. (DD hung on far too long as she hoped she could win other's round, till something happened that forced a move. There were three lovely girls in her new flat but it was too late to really bond with them - a lot of what might have been.) Accomodation will know which are the problem flats. However if it is just a request to move, there is no guarantee that she is not just moved to an equally difficult place. There will however be flats where someone wants to move out because their flatmates are too "dull". Perfact!
She should first speak to the warden/senior resident and tell them she is unhappy and seek their advice. They will have seen it before. (If she is at the University which has just got rid of hall wardens as a way of "improving" welfare support do PM me and I can share more detail.) She should also speak to her academic/course tutor, or if she does not have one (DD didn't) go along to the office hours of one of her lecturers or whoever is in charge of first years in her subject, explain that she loves the course but is finding halls really difficult. One of DDs seminar tutors was worried about DD so made her stay back and then set everything in motion. Her department won't want to lose good students so they can make things happen.
I had also phoned the accomodation office anonymously to check procedures, so I could advise DD.
Another thing to worry about is next year. In some Universities students start looking very early. This worked in DDs favour as the rest of her flat excluded her, but she ran into a couple of girls she vaguely knew from a society, that had the same happen to them, so they started looking together, all aware of what they did not want in a flat share. In contrast some of those flat shares based on six weeks acquaintenships have gone very badly wrong. She says one of the other mums had a real rant about the treatment her daughter had received the year before, so she know that she/I were not the only ones.
Good luck. Really if she likes the course, a move is the first step. Then if it does not work out try a flat closer to home. But for us second year has proved night and day compared with the first. Thank goodness.