I would also change the language in your lease to keep you from having to contend with this again. 

You'll want an investor friendly agent who speaks the language, knows what makes for a profitable investment, listens, is willing to put the time in to work with an investor, and acts quick when a deal presents itself.

It may be worth your while to take some state exam prep courses to learn the language, material, and question styles of the exam.

You can remedy that with a fresh loan modification that includes, among other clauses, language that reaffirms the debt.

Many title companies don't like to make revisions, deletions or additions to the language in their documents, however, my preferred company was very agreeable to all my requests for same.  

Consider including language in the contract that states additional scope will not executed without an approved change order.

Since the security deposit would be paid to both Parent and Child, and the parent is just staying - what kind of special language do I use to say that the security deposit is being transferred to new lease - but in addition when it is returned it will be made payable to "parent AND child" since they both submitted it?

@Oscar FreimanI use the TREC residential form about 90% of the time but I include a special provisions Exhibit to change the promulgated language, depending on whether I'm buying or selling.

Contract language is usually pretty state-specific and I am hesitant to comment on that.    

We’ve even included some language that assures the sender that they’ll get paid once a deal is done.