AITA for going no contact with a friend after she threatened me?

Sorry in advance this is a long post and I will try to update as the situation undolds. For context I am a 27F living in a small apartment complex in a small town. My bf 28M and I have lived here for almost 3 years. We have made friends with the new family that had just moved in about 6 months ago. They have 3 boys around my son's age and they were close to our age. Let's call them Susan 29F and Duke 30M. Susan and I ended up working in the same company as well (this will be relevant later) and were getting pretty close. We would have them over, mostly her though, for games and drinks. Her other friends would come as well. Things were going great until Susan and her husband started having marital issues. Accusations of cheating stemming from work. I will admit thing at work have been weird but I just thought that that's how they were since she started working there first. Well as the week went by things got messier and messier. Tonight things got to their worst. Susan and Duke we're trying to work things out and she kept being rude and disrespectful treating him like an actual dog so ,upset, he calls the cops on her and her friend runs over to our apartment and asks if we can take her home because they're fighting and cops are on the way and she cant be there. So my bf and her friend are IN my car when the cops pull in, 4 of them, and surround my car. Now my bf and the friend are staying still and quite in the car becasue for legal reasons she isn't supposed to be there and if my bf gets caught with her he could go to jail for aiding and abetting a criminal. So I message my friend to let her know that I wasn't happy with the fact they had involved us in their situation. So her response was yelling and screaming at my bf as he's walking back into our apartment after the police left. I go out to confront her and she has already left to take her friend home before the police find her. I go inside and I call her husband to find out what is going on. He tells me thats shes loosing her mind and if she keeps threatening us like she was that we needed to get out of there and protect ourselves because she is mentally unstable. Well she threatened me again through a text we left and called the police. The police are refusing to do anything about her for some reason even though they knew she was under the influence and sending threatening messages. I am supposed to work with her this week and she has made it clear that if she sees me she will fight me and ik she'll keep her word. I forgot to mention that she is being trained to be a manager at the store I work at. I have let one of the other managers know what is going on and they informed me they would let the other manager know. I am scared to go to work for fear she might shows up and try something. I cant go home becasue shes waiting for me there. I am at a loss and I dont know what to do in this situation.