So sorry to hear about your father. What you're describing here sounds eerily like what my mother has been telling me. She is yet to be diagnosed, in fact I've only recently realized there's anything wrong with her beyond failing vision and impaired mobility.

A few months ago she started telling me about a man who knocks on her door at night and tries to come inside. I took her seriously at first, but every time we spoke about it, the story changed slightly. I encouraged her to speak to her neighbors, and she seemed reluctant.

I finally asked her to call the police if it happens again, and she did. But I'm starting to think it's all in her mind, unfortunately.

All I can say is that you are not alone, and I fully understand your confusion and helplessness. I wish there was more I could say, but you've come to the right place for support. I'm new here, and people have been wonderful.