She needs to understand that her anger can't be resolved unless you know which particular actions, attitudes, behaviours of yours anger her. Ask her what, specifically, about yourself is proving to be problematic. The main idea is to make it clear to her that the only way she'll solve her emotional conflict is by having a rational discussion with you.
On a separate note, less direct, long-term solutions include showing your love now and then (through words, chores, etc.) and being more open with her about how you're doing in general, both of which will help her see things from your perspective more. Small things like keeping tidy, helping out where you can, and working/studying hard can also help her feel more balance in her relationship with you.
Good luck!