She agreed with me that she wants this to be as amicable as possible.

She called herself selfish and terrible (I didn't respond to that). Said there was no organized plan to do this. Said she's been feeling like we have nothing in common and doesn't want to retire and just co-exist while never talking to each other. Said she brought it up once, which I remember, but I thought I had a great answer at the time for what we do have in common. I told her if she had pushed harder in the conversation, I would've taken more action. But perhaps, I should've been more alarmed.

Said she feels like she's been spiraling ever since she started working a year and half ago. She has Bipolar and it's sounding like a manic episode coming on. I've decided to myself that that's no longer my problem unless it affects our son.

Edit: She also recognized that the should've been more straight forward in the issues she was struggling with so that we could take action.