I know she resists being ignored or spoken to calmly because I've tried both :/ the only time I've ever got through to her was when I managed to make her stop going on about my weight after one of my friends told me that when I mention that I feel fat/shouldn't eat so much or if I'm obviously dieting it makes them unhappy because all but one of them weigh more than me. When I told her that she was taken aback because she was convinced that I was above average weight until that point and she backed off. But everything else she's very persistant about; it's like it takes other people saying stuff for her to respond...
Next month I will have a job, and then I go back to university so that will help...