Blocking a Friend on Facebook

I don't take it lightly on ending a friendship, hell it might already be over but I wanted other input on the subject. I'm 25 and I just got into nursing school, I live in costly area and so my friend from college said that I could live with her and her husband for cheap. I was excited and I had lived with her before during college. Well fast forward, I didn't know that they where having martial problems and also didn't know her husband was bipolar. They would fight and one night he got mad and he put his fist threw my bedroom door and broke a bunch of furniture. He also threw the dog that was in a kennel across the room. He also will call my friend a bunch of times and if she doesn't pick up the first time, he will start calling her a whore and ****. He would verbally abuse her and she would make excuses for him all the time. He also gave her curfew that she had to be back by a certain time. They also have two dogs and one is 1 1/2 year old husky that they would never take for walks and it would go to the bathroom on the patio that would fall to the cracks of the neighbors area and onto the grill is was also right outside my window which constantly smelled of dog poo. To make matters worst they have 2 cats that would pee everywhere and the apartment smelled disgusting. I told her I was moving out and she got mad at me telling me i was abandoning her and everyone in her family leaves her. We haven't spoken since I moved out, well other than the facebook messages she keeps leaving me, that I don't respond too. I'm trying to decide if I should cut all ties with her and also block her on facebook?