Hello Hastings: I noticed this is your first post here on PC. So... welcome to PsychCentral. One forum in particular (& one where you might consider posting again with regard to your concern) would be the relationships & communication forum. Here's a link:

https://forums.psychcentral.com/rela...communication/

And then here are links to a selection of 13 articles on several topics, from PsychCentral's archives, that hopefully may be of some help in figuring out how to proceed... the first 2 by our host Dr. John Grohol, Psy.D:

You Can Only Change Yourself

Denial is a Powerful Impediment to Treatment

https://psychcentral.com/blog/11-way...-denial/?all=1

How to Persuade Your Loved One to Seek Professional Help

https://psychcentral.com/lib/how-to-...dium=popular17

https://psychcentral.com/lib/psychotic-depression/

https://blogs.psychcentral.com/bipol...in-depression/

https://blogs.psychcentral.com/careg...dium=popular17

https://blogs.psychcentral.com/careg...hout-fighting/

https://blogs.psychcentral.com/careg...dium=popular17

https://blogs.psychcentral.com/careg...dium=popular17

https://blogs.psychcentral.com/careg...-to-delusions/

https://blogs.psychcentral.com/careg...nes-delusions/

There is also a book (& a YouTube video of a talk by the book's author) I like to suggest in situations such as you describe. The book is titled I'm Not Sick, I Don't Need Help. Here are links first to a review of the book & then to the YouTube video:

http://www.asmfmh.org/resources/publ...ont-need-help/

https://youtu.be/NXxytf6kfPM

I hope you find PC to be of benefit.