Urgent help pls...how to deal with possessive room mate?

I think you should just tell her to stop when she is bugging you when you are silent. than if she keeps doing it ignore her for a little than tell her you are silent for a reason and don't want to be annoyed. alright so if she gets jealous you should tell her you are aloud to have other friend than her. Don't worry if she is bitching about you to other people because if she ever asks you why you are kind of pissed at her because she does do that tell her if she really wants to be your friend than she should start acting like one and not be so rude. I have been through situations like that so i think this advice should work.