What happens when avoidants become seniors?

So my 61 y/o F dismissive avoidant just left me after 7 months of marriage. I was a secure confident 65 y/o M that was rocked by NC and showed some anxious traits for a few weeks before going no contact myself. She’s been gone for 60 days, I’m NC for 40. Yesterday she sent a cute text but I’m not sure if she’s breadcrumbing or it’s real.
Here’s my question. She’s 61 and still beautiful but as we all know time will change that. As we grow older there is generally more reliance on a partner to face the challenges that come with age as a team. And ultimately we don’t want to die alone so as we get older that must resonate with avoidants.
So does age cause them to seek change? Seems like they would have a better understanding of attachment styles by then. I learned on my own that my wife was avoidant at the NC breakup. Looking back she’s been doing this for over 40 years (4 marriages). I knew about 3 of them (2+ours).
So do they flame out and give up? Do they continue to break hearts in assisted living? Do they spiral into psychosis or deeper depression? Do they end up alone?