My father bought a piece of property in Florida decades ago as an investment. We have been referring to it as his swampland (even though it is inland). The property is in his name only. He passed 17 years ago in Maryland and his will, leaving everything to my mother, was probated in Maryland. The Florida property remains in his name.
I play around with real estate as a hobby and in my unprofessional opinion, the land is worth somewhere in the neighborhood of $3,000.
Mom does not need the money right now and it would most likely end up being part of her estate.
If you were me (future executor of Mom's estate:
A) fly to Florida and open an estate there and probate the will so that the swampland is titled to her and then passes according to her will
B) wait until she passes and then deal with it (I guess by probating both wills)
c:) in the words of the get Princess Elsa... Let it Go. Abandon the property and let it go to tax sale.
Of course, if Mom needs the money before she passes, I would figure it out but, let's assume that she won't. My share of the land would be worth around $750.