One of my roommates has lived with me for 2 and a half years. She did not sign the lease, pay a deposit or sign any agreement with me. The apartment is mine, I'm the only one on the lease. Things are not working out (she's been violent to other people and is acting threatening towards me) and I have given her 30 days to leave. However she's acting as if she's not going to leave! And as if I have no right to do this. I've spoken to my landlord and he has confirmed she's not on the lease (which i knew anyway) and says that there is nothing he can do and that this is between me and her. As leaseholder I believe I have to right to ask anyone to leave for any reason as long as i'm giving them sufficient notice. Please help me! If she won't get out, what can I do??