I have a similar story. My ex-wife was into all this stupid mysticism/wicca stuff and always getting “readings” from these psychic con artists. One of them told her I was having an affair so she decided she’d go out and have an affair in retaliation. I had never cheated and it was completely made up garbage. I figured out what she was doing, got a lawyer and private detective who collected all the evidence I needed to divorce her for adultery. I had her dead to rights and she had nothing because there was nothing to be found on me so I came out well in the divorce and she got little. Ten years later I’m happy and successful while she’s an alcoholic who is shacking up with a deadbeat in a dump. She’s still infatuated with the occult from what I hear.
I am glad you escaped.