Good question. My conclusion is that she is at least somewhat wealthy. She also runs a boutique yarn shop in the same town.
In my experience, I have seen these operations time and again in small college towns. Usually the husband has a pretty good job, at least enough to indulge his wife's hobbies.
This restaurant only seats twenty six people. This lady charges $28 for a pork chop and grits. She has a large staff. She would be lucky to break even and cover the rent. Maybe she owns the building, though.
Nobody in the rural South is going to pay $28 for a pork chop and grits—nobody except a transplanted northerner who has the word "sucker" written all over his back. You know that the local main street merchants aren't going to patronize her place. They have to make a living and can't fritter their money away on boutique food.
The woman has bucks, and can afford to play the game of restaurant owner.
I’m not familiar with Lexington, so I thought maybe it’s a tourist oriented town, and that tourists are the ones who pay $28 for the porkchops?
In any event, her business will certain take a hit, since they clearly let us know you have to be liberal/radical/anti Trump to go there.