My housemate.

Ok, she hardly ever washes in a shower. We share a flat and since she got back exactly two weeks ago she (or her boyfriend) had a shower the next day and now someone has only had a shower today. I know she has not showered as she shuts the curtains (even during the day) and moves the shower way up high and I keep it down low (I am also shorter so she would have to move it).
Also I am confused as to what she eats... she has had the same frozen food since she moved in, the fridge is always empty. She does not eat at the canteen either.
I also know she has not washer her clothes for two weeks as the washing machine is broke yet I have not told her yet she has not used it.
What really annoys me is that she does not wash her hands after going to the toilet (espically a poo).
She says she is unwell so her doctor has told her not to eat reguarlay (WTF) and her poos are terrible, she always leaves floaters which take ages to flush!
Please help.