My ex-girlfriend is her father's primary caregiver, but they have physical and verbal fights. Could she have her father put away for this kind of behavior?

Dear Aging Care:
This is about my ex-girlfriend (age 52) and her 85 year old father. She is his primary caregiver 24/7. They both live in the same house. She is not married and no children. The father has medical and mental issues. They actually have physical and verbal fights. His mental condition is a mood change. Medications does not seem to help. She gets no help from her sisters or brothers because they do not really want anything to do with the father.

In the past, a few times police had to come to the house. She does not know what to do because she can not take care of him anymore. She is afraid that she could loose the house and has a lot of anxiety. Could she have her father put away for this kind of behavior? say in a mental nursing home? Something has to be done because I am afraid that some terrible is going to happen to either one of them. What can this girl do? I am her ex-boyfriend because the father does not want me over the house and when I used to leave, he used to talk about me. I guess he felt that I would tell her to put him away.
I do not want to see any one go away, since when I lost my father 4 years ago, he passed away in a Nursing Home.

Is there anything she can do? She does not want an assisted living person in the house. I just don't know what to tell this poor girl? Thanks for your help. Victor