I wouldn’t say that the problem is you, but you’re certainly not helping it.
I’ve had similar problems with people before, and I’m probably going to get flamed for this, but I think that if you’re not willing to stand up for yourself and have a talk with her, then you shouldn’t complain. Kinda like how people who don’t vote shouldn’t kvetch about our government.
She is definitely the source of the problem, but nothing is ever going to change if you don’t at least become reactive.
I know…I know…
flame? in the pit? me?
The reason I didn’t say anything before was because she had me convinced she was leaving. I’m a Libra with definate doormat tendencies. (Learned helplessness? Is that what it is?)
But now I’m annoyed and she’s still a fucking thick bint. One of us is going out the window.
AL
Sit her down, and tell her you’ll puke more quietly next time you have to, when she shows she can be quiet on a Sunday morning more than once.
Attributing your personality traits to astrological bollocks is probably part of the problem.
You’ve got an uphill battle anyway. You’ll not find a more self-absorbed, selfish collection of people more convinced of their own unique, epoch defining, brilliance than first year students. 
Put some ham on her hat, your flatmate will then be devoured by giant Aberdonian seagulls and your problem solved.
Aberdonian seagulls aside, the problem is nearly solved.
She’s got my chest infection.
(I was joking about the Libra thing…oh, if I only had a sarcastic tone)
AL
I had the same problem last year when I was living in a university residence. I was sharing a flat with seven people(Individual bathrooms though!). I couldn’t socialize with my flatmates. I was in my final year while all others were in their first years.
Totaly different agendas. They wanted to have fun, but I wanted to get my degree.
Definitely tell her to fuck off, the snobbish slag (who apparently can’t even talk properly, therefore is unjustly up her own ass.)
I deal with obnoxious people like this by puking over their feet. They don’t disturb me again when I’m hanging over a toilet bowl.
Lil
What a lovely turn of phrase:
“half of it’s me and half of it’s my rotten luck.”
Thank you for that. I will steal that line to replace “if it wasn’t for my bad luck I’d have no luck at all”.
Speaking in rap seems to discomfit the pompous: “What you say bitch?” or " Why you dissin’ me, you still my ho?"
Hope she enjoys her infection! She sounds like a nasty bit of work. I must say your description of the situation made me laugh though. Not at you but the way you described it. I have to find a way to use bint. Best of Luck.