Safety first! Social awkwardness inducing situations second!
Salty and/or climates are a definite death sentence for vehicles left to the whims of nature. This is a tough decision you face.
Picture this scenario: Sell to a local person with garage on the terms that you may borrow her back occasionally for special circumstances.
Might seem like a dream outcome, depends on who's in your IRL social network, really. I wish you good luck! Keep us posted 😉
That's not a bad idea, actually. I know a guy who works for the town as a mechanic...
I'm sure you will come up with a solution that is suitable for all involved while maintaining your old gal's dignity ☺