How do I continue to have a relationship with my Dad?

This is really a tough situation. I wish I could offer some solid help but offhand can't think of anything that would be helpful that your father would accept.

I agree that reaching out to the relatives is a good idea, not only to learn if they've experienced similar rejection but also to build support within the family. You don't know what this woman is telling him or what he may be thinking and has told the family given that he's told you not to visit again.

This may sound self-serving, but you need to protect your reputation within the family, which may be where he'll turn if/when she gets what she wants and leaves him.

What are their approximate ages? Is she much younger?

One possibility is to contact the police and ask if she has a criminal record - it might be that she's done this before and others have been fleeced by her (which is what it sounds like she might have in mind).

One drastic consideration which I mention only if the situation gets much worse is to file a petition for guardianship/conservatorship with the local probate court, then ask for a restraining order against her. However, that would probably make your father so angry it would completely ruin what relationship you still have with him.

He might also be in the throes of passion from this new relationship after having been widowed for so long. But clearly he's not thinking rationally.

If you have a copy of his current Will, you should be able to determine the attorney who drafted it. You could contact her/him and raise your concerns, (1) to see if she/he has any suggestions and/or (2) to alert her/him to the fact that your father is behaving irrationally. If he does go to this attorney to change his estate planning documents, she/he will be on alert and may decline to make the changes. He could always go somewhere else. But the attorney would also have the right to consider legal/medical intervention and it would come from her/him and not from you.

Good luck; wish I could think of something that really would help but unfortunately your father seems hell bent on destroying his relationship with you. But I guarantee he'll call you when she's wrung him out to dry and left him.

It sounds to me like they both need help! Yes, I would involve other family, if just to express your concern for their health and wellbeing. Your uncles may be thinking the same and not want to trouble you. Are you in touch with neighbors as well? If nothing else, I always found it useful to have my mom's neighbors numbers just in case.

Thanks for the replies so far, it helps slightly to know that others can see this.
I find it particularly hard as I have no siblings who could share the load. My father has two brothers, my uncles and we have always been quite close to them.
I am considering telling one of them what has happened, and asking how much he still sees of my Dad as they used to be close but I fear not so much any more.
The only trouble is I don't want to put them in a situation where they become the next people to be vented at and excluded.

I have tried the just Dad option already as I wanted him to feel like he was still welcome alone if she cannot bear to be included. This worked for a very short while, however, she will not allow him out to continue this ! Apart from a brief visit to the barbers, and doctors, he seems to have to be with her 24/7. Perhaps she also has health issues which make this worse, anxiety perhaps but not allowing freedom is unhealthy for everyone.
I am going to try and speak to his doctor and failing that may ask my own doctor to do so. If,as I suspect, there are also health issues involved then in some ways it makes his behaviour more excusable, though still unpleasant. It might also help extended family to understand and maybe even offer some support.

Ugh! . You poor thing..

Unfortunately he's sticking with this awful women. I would still continue to call him letting him know you still care..

There isn't much you can do unless you want to get his doctor and the courts involved.

I'm so sorry about your father. I've read this situation over and over on this site. If your father was never declared as incompetent, then he is free to do whatever he wants. And that includes have a manipulative person in his life. She will want 100% control over him and all that is his. Unfortunately, she's turning him against his family. I wouldn't be surprise if the same thing is happening with his friends. She is not willing to accept you in their life. I really don't know how you can remedy this. The best that you can do is continue to do what you're doing, and just be there when your father will need you down the line. If you're able to forgive him the anguish he will continue to dish out to you. The verbal anger against you might get worse as you continue to try to talk to him. I hope someone else will have a practical advise for you.

Yes, this sounds like a toxic and abusive relationship. But as with an "of age"and independent adult child, we can't stop our parents from making poor choices. Can you maintain a "dad and you" relationship? As in see him for lunch, just you and he? If not, then I think you need to make it clear to him that when she and the money are gone, he's not to come looking to you for in home care. You can suggest that he go to a lawyer and make sure that his eldercare needs--nursing home etc, are fully funded as he won't have you to care for him later on. Of course, this could be dementia setting in. Don't know if you can sugest a check up, but you might cal his physician to express your concerns over his recent behavioral changes.