Maybe you can take it to a small claims court or report to the regulatory authority for the licensee in the state?

@Maya Jones I would use the Illinois Supreme Court document.

Talked about the US Supreme court recent ruiling.

Simple plan that's seldom mentioned:  spend a few hours in L/T court each week. 

Let them know that you’ve been appointed as your mother’s court-ordered conservator/guardian and that all matters regarding rent, maintenance, and communication will now go through you.

Same thing in bankruptcy court.

I like this idea, if you ever had to go to court, this will make it known that she is responsible too.

You get to spend a lot of time with a lawyer in court.

More losses.Do you think the closing attorneys should have checked probate court to see if there was a case by the estate when I purchased? 

One other thing to keep in mind (which may or may not apply in TX), but in Ohio, a property owner can represent himself in court for an eviction action.