I'd second finding a good way to store it, at least for a year or so, and considering your options (and driving it occasionally) before selling it. Maybe cruising around aimlessly with you wife next to you is all you'll ever do with it, and maybe that will grow on you enough to keep it.
It can be funny how much meaning gets attached to some objects, especially if they were near and dear to those who were near and dear to us.
Indulge me in a bit of a story to illustrate that point.
I never met my mom's father, Pat. He died several years before I was born. By all accounts, though, he was one of those guys they just don't make anymore. He got lost his left leg at the hip in WWII, came back to marry my grandmother, started an HVAC business and had a penchant for hiring guys who were social outcasts (including a guy he found sleeping in one of his work vans) and ex-cons. I have stories and pictures and this general mythology of Pat.
My most direct connection to him is through a few of his instruments, namely a couple guitars. One of those, a '48 Epiphone archtop, is the one that he'd leave leaning on the wall of the dining room, and pick up at the end of dinner to torture his family with the country songs he'd been learning. That one's now in my possession (I don't consider myself the 'owner,' it's still his as far as I'm concerned), and aside from my girlfriend, it's the most valuable thing in my house. It's not worth a whole lot as a collector's piece but it's literally priceless to me.
I'm far too much of a skeptic to be a spiritual guy, but sometimes when I play it, I have an overwhelming, unexplainable feeling of...Pat. He's with me. It's the end of a long day, he has his leg off and his cane leaning on the table, a bottle of Stag in hand, tapping his foot and singing along.
It's that feeling that makes his guitar mean so much to me.
I don't even have first hand memories of the guy, just the stories I've been told over the years. And yet I have this powerful connection to him through this guitar, because it was his.
Take that for what it's worth.