There is no indication of 'why' she might show no motivation. The assumption here seems to be that she's a freerider, a burden, and not a partner with motivation issues. And I cited good reasons for lacking motivation. From personal experience.

Yes, there are people that become lazy, or show their laziness after some time hiding it behind an easy 0-producing job. And yes sometimes you discover that you don't like that in your partner and maybe you're now too different, etc.

But this hustle mentality, don't stop and think, just find a job, any job, gogogogogogogogogo, isn't how I want to be treated when laid off or broken in some way. There's a lot of talk on HN about mental health, burnout, depression, but also lots of people that seem to be OK to ditch a partner at the first sign of him or her not being 100% 'on' all the time.

There's many discussions to be had when you realize your partner doesn't want to work anymore. The first one is probably 'downsizing' as fast as possible. Can we live on one salary? How much time? What do we let go to weather this? Do you think it's temporary, do you want to switch careers? Are you ready to lose those comforts? Are you thinking about the near future? Do you have plans? Do I sit in them? do you want to try therapy? Maybe not all the questions on the same day. Decisions, together. And red lines if you must. Money, kids, health. Yours and your partners.

I was just saying, maybe someone you trusted and observed having fine work ethics (if that's what floats your boat) changing suddenly, is maybe sign of a problem you were supposed to be helping with, as the other person in this relationship.