Person squatting with no lease at my father's home in Long Beach

[James Peters]

The Long Beach Police have not been able to help with this situation, so I figured I would reach out to see if the BP community could offer some advice for a huge pain I have been dealing with for over 3 years.

Here is the short story on what is going on today.  A woman who my father met many years ago in Santa Barbara was invited by my father to help him take care of my elderly grandmother.  Apparently my father made an informal agreement (there was no contract or lease) that this would include room and board and $1500 a month.  My grandmother passed away 3 years and it took me a while to get her out of the home, but she moved away.  Turns out that she forced her way back into a back room in the house in Long Beach and does not have a job.  Now she has been texting me and saying that I owe her 18k for back wages and has a lawyer.   Apparently since she has items in the house, the local police are not willing to do anything and get her out.  She is taking advantage of my father who has early onset dementia.  There was no lease or agreement, but she has stolen paperwork from the house and it would not surprise me if she tried to forge something.  

This is just the tip of the iceberg (had to get the house out of foreclosure, 500k disappeared from my Grandmother's estate with some of this linking back to this woman, 45k tax lien, etc.) that I have been made aware of after my Grandmother's death.  

The police have not really been any help and I am wondering what my options are?