Yikes!
i would think if it gets unbareably bad as it is right now, you could call the police in to intervene. if she cant get a grip on her actions, and words, and harrassment, then they can make her get her stuff out, and stay somewhere else for the night, or upcoming nights.. which would buy you some time until the landlord or your casemanager can call you back..
I know these places aren't near you, but they don't deny talking to people just because they aren't in the area that they serve. You can text, CSIS to 839863 , or a chat room here: National Suicide Prevention Lifeline

or Lifeline