If they don't reserve the minerals within the transferring document i.e.

As always document everything, keep his nasty note too in your file Good luck on re-renting  the property, the market has picked back up over the last week or so

I have an attorney that will close the sub-to deals the right way out of Austin and another in Dallas but they do charge a premium to handle all of the proper documents, mostly disclosures about the underlying lien.I do know another investor that works only in the Killeen market and is pretty Savy as all the do is the sub-to type deals up there.

Your attorneys is going to tell you to document everything.

Is that the appropriate document I should have him sign?

While I pay her rent there is no official document or lease.  

Lastly, like any other close, make sure your financial documents are in order... you'll need copies of taxes, bank account history, investments, etc. gathering all of that information can ne a pain if you aren't organized.

What type of documents could I ask for?

Each regional VA office requires different documents, however these are the BASIC documents required for VA Condo approval. 

We were asked by several past clients to help provide them with documentation to support their request.Look at the tax assessor's office website.