Welcome from Ohio. Sorry to hear about your Dad. Post some good pics of various parts of the frame and the rest of the body.
Here is your range:
In pristine condition, no rust, no mechanical issues, under or around 100k miles, you could get 10-12k for it around here. If there is excessive mileage, the price goes down a bit, but not too much if it is pristine. With a salvage title, the cost goes down even more than high mileage, even if the Jeep is pristine. That said, this is obviously not your situation from the first pic and what you have stated.
Next, if the frame and tub is shot, then it goes down to 3-4k and maybe less, if someone is willing to take it and wants what you have left. Best to part out most likely, or just cut your losses if you just want to get rid of it.
If the frame is good, mechanics are good, and the tub is shot (not common in MI and OH), then maybe 5-6k. Some that have "Safety Caps" on the frame might fall into this category, but most savvy buyers will still avoid this like the plague. However, someone looking for a TJ to wheel without much money or wanting a project might take you up on it.
When I was looking about 2 years ago, there were so many rusty TJ's around here still asking 7-10k, it was crazy. I'm sure they don't get near that $ in most cases, if someone actually crawls underneath and looks closer at the frame and all of the tub. But, many rookie buyers out there don't know what they are doing.
You just need to figure out the true condition of the frame, the body and where you sit in comparison to what is out there.