I met with the director of the housing agency that placed my roomate with me. He talked to me as if i also had a phd. He addressed me as an intelligent equal. He told me that I am composed, positive, and express myself beautifully in writing.
And on top of that he said that he is completely convinced that indeed she, the roomate is very much endangering me and everyone else in the building.
He is working on it as fast as he can. So, I am in a good place mentally today.