Menopause can contribute to MLC for a women, because it is another sign to them that they are getting old and their life is almost over. A person in MLC will question ALL the choices they have made in their life, (especially the big ones like marrying YOU) and often feel they have missed out on something grand that they now must hurry to make up for. (remember, time is running out)

There is no "official" diagnosis that I know of. Read everything you can find on it and decide for yourself. I don't recommend telling your wife she's in MLC though, it will only make her pull away from you because she thinks you're the problem, not her MLC. She's convinced she has had an awakening, and is finally on a sensible path... trying to convince her otherwise will only pit her against you.

The best thing you can do is be her understanding friend and keep listening so she keeps talking to YOU. You don't want her to feel like the only people who understand her are the kids she found online. Validate her feelings.

M: A really long time.
Crisis: 5 years.
She's still worth it.

Life is never made unbearable by circumstances, but only by lack of meaning and purpose. -Viktor Frankl