There is a pretty good one shot with this scenario that I ran with some friends. It was truly groan inducing once they got into the cabin lol.
Here's a link from where I found the scenario, alongside some additional materials.
https://www.reddit.com/r/DMAcademy/comments/nwljt7/actual_cannibal_shia_lebeouf_5e_oneshot/
Is there any reason why she doesn't have a job? That is a big social experience. A job could help give purpose, and give opportunity to develop skills.
The suggestion of joining a sports league is a good one my wife and I play volleyball with some of her work friends and their spouses. Gets us together weekly to chat catch up, have a few drinks. It's been wonderful for getting us out of the house.
Hopefully you can find something to help your wife become more independent.