Well myself and my mom are going to eviction court to tell the judge and jury that her son exploited, lied, and took advantage of her blindness to get her house. Now he is dead and his son sold it. He went to probate Court and got all his dad's things but Houston is where all his dad's things were located. The house is in another town and we never got anything from probate that the house was on it. Well anyway she wants it back and the deed made like her will. And she has witnesses and evidence that she would of never signed it without it being as her will reads 4 children split and if any of us take the other to court for our part then that child gets nothing. My mom is 91 and blind and was blind at the time that her son had the deed done.
So you'd be trying to prove a negative without even having the surrounding circumstances open to objective questioning. And you don't have access to any pro bono citizens' advice/legal advisory services, do you?
If you are okay, and if your mother is okay, then moving on is going to be best for you. The real wrongdoer in the case is pushing up the daisies; and though it may grate for his son to be the beneficiary... well. He's not the real culprit.
Get all your paperwork and information together, tidy it up, stick it in an archive file and leave it for posterity.
How are you doing, otherwise?