My dad and one of his former caregivers are dating. He is under 24 hour care. She been asking to spend time alone with him. I have power of attorney and just setup a trust to protect his assets. His pensions could be removed from the trust since he still owns them and my POA could be taken away. I had talked to my Dad on good days that he is not able mentally to make life choices like marriage. I have talked to his girlfriend that he can not make any legal decisions. She understands but my family still thinks she will take him out and they will get married. I don't want to have to declare my father incompetent. Can I have a lawyer write up a document for her to sign that states she understands and agrees that my father cannot make a decisions relating to anything legal or financial? My thought is that if my family is correct and they go and get married, I can take my father to court for guardianship and show the judge that she knew he could not make legal choices but did anyway to take advantage of him.