Have a lawyer send the cease and desist letter, with the threat that she will be responsible for your lost rental income if she continues to harass your guests and impact your bookings. 

You will need to consult with a Texas Estate lawyer. 

Even as we get efficient and effective buying solo, getting it to our advantage with price reductions and concessions used to be very tough but should get easier with the new (about time) rules of buyers being responsible for getting their own agent paid.  

Will this be effective retroactively?

Any recommendations for a cost effective lawyer to start the eviction process?

we have a realtor we like but curious how badly that effects our margins vs the expertise they bring on the market we are in. 

When I was a full-time wholesaler most of clients were able to pull the trigger within minutes of entering the home, some trusted me enough to buy sight unseen on my recommendation, and some always wanted to get a contractor in there or run the contract past their lawyer.  

Or would it be more cost-effective to replace just SEER condenser and evaporator coil for the AC?

Over time, this compounding effect can lead to substantial wealth accumulation.In conclusion, a 1031 tax-deferred exchange is invaluable for real estate investors.

He has connections to trustworthy Agents, contractors, CPA's, and lawyers, and of course, he would manage my property(ies) for me.