I'm a homeowner with a tenant oral agreement what's my right to end the oral agreeme
I am a homeowner who shares 1 room to my sister for 5 months.and pay me $500.00 all bills paid. Oral agreement. However she became irrational and violent to the point of threatening to kill my family. I have the case no.of the incident. She is in the process of moving but we changed the lock. I'm usually home to let her in. She called the cop and the cop insisted that she has the right to have the key. What's our right to protect ourselves?