Hypergamy gets a lot of press here as a reason for female initiated divorce but after the age of 50 female initiated divorce really comes from masculinization due to increased testosterone. Women lose the "nuturing" aspect of their personality as well as conflict avoidance. In RP terms they stop submitting to male frame.

It's all here.

http://www.more.com/health/perimenopause-menopause/how-menopause-affects-your-brain

What does LTR game look like then?