Hi welcome to health care magic forum.
Thanks for choosing H.C.M.Forum.
Your wife of 45 years old, is in
severe depression, no faith upon you, she remains alone, and inactive, intermitently, search for conspiracy in everything. she dont want to go for treatment. You are also loosing confidence and getting hopeless.
I appreciate your patience for living with her so long and bringing up children, in a prosperous way. So long you could drag, now you should not loose patience.
She must be having the psychological problem , and definitely needs to get treatment. If she dont want to take tablets, she can have long acting injections once in fifteen days or a month.
Keep the entertainment things like tv,music system, etc in her room.
Try to convince her to visit a psychatrist, telling that he is not a doctor for mental debility and he is for welbeing of the patients.
Wishing her a quick and complete recovery.
best regards.