In a couple of instances a new tenant was found to replace the original sublease tenant, and I structured a full release from the sublease providing the sublessee met the conditions for a full release.

@Andy TomaswickAs a property manager myself, I know that here in Florida there are different releases from the actual agreement itself.

Due to HOA restrictions, we can't re-lease the property to the current tenants or lease to new tenants. 

Therefore, your most time efficient method might be to send your listed expenses to the seller's agent or closing attorney and announce in clear words that you will sue if you don't get fully reimbursed and the EM released to you in 48 hours.

I would just like to be able to assist them with their investment they have held for years, their financial situation, and allow them to release the stress of owning property at their age (Late 80s).

Contract is signed but sellers lawyer won't release it without receiving initial funds of $95,000Buyer may be willing to entertain borrowing more from hard money.

I was thinking about a quit claim deed or a release of liability but my mortgage company will not honor either of those for purposes of removing her completely(credit report, etc).

He is going to sign an Authorization to Release information so I can speak with the bank on his behalf.  

If your loan allows it, and you sell one, you will have to repay the bank $10k, and they will record/file lien release docs for that house. 

I am constantly confused when a newly (released this week) released  tape of JUNIOR liens come out and in doing research, the property has a "sold" or "sale pending" when I am on Zillow or another real estate site.