Well you have spoken to her and the accomodation people, have you tried student welfare? If it is so bad,that it is difficult for you to continue your studies I would have thought you should try them . In my view they will do little to her unless several others complain about it,Is there anyone else complaining about it? if she has a neighbour on the other side ,you might want to have a word. but in my view they really ought to be at least trying to find you alternative accomodation. Don't retaliate no matter how tempting,as if there is any mediation or she gets in trouble,she could bring that up. You have asked her to shut up, no say the bare minimum.
I and several others managed to get a druggie who was next door to me and making an entire corridor a misery with fights,stealing from the fridges, parties that could last all night ,leaving 'presents' in shower,the whole corridor stunk of pot some nights and flooding the corridor finally kicked out.It took a while though, the the hall warden did nothing when it was just me vs him, basically it was mediation where he apologised and said it wouldn't happen again, but until the entire corridor was up in arms about it,then they acted . I even ended up being a witness, which caused me a few problems with his mates. He was fined first,and ended up being chucked out when he did not change his behaviour. I was rather satisfying to see his parents turn up to get him and struggling with the suitcases.
Maybe try ear plugs? Being a light sleeper myself I can recommend a brand called silent ear, I think they sell them on amazon.They are cheap and last up to 3 months.