All her important things were taken including her wallet. He swapped his trailer with hers after I refused to sell it to him. My uncle picked it up but had no idea it was not her trailer to begin with. How can I find it or get it back? Can I find out if there is a will? It's killing me inside.
What about the police?
How long ago did he steal it?
Are you certain that the 5th wheel picked up was not your moms?
Because it seems like the family didn't know what she lived in for Uncle to pick up the wrong rig.
How was it that he (the neighbor) approached YOU about purchasing this trailer if it was mom's? Even if this happened after she died, her estate would have to pass through probate before you (or whoever inherited the trailer) would have the authority to sell it.
If it's been stolen, call the police and tell them what happened. It shouldn't be hard for them to track this person down, especially if you still have his trailer.