I would love to hear more about the mechanics of the deal you arrived at with her!

There are pilots, passengers, flight attendants, mechanics, and more, who all work together to get the plane safely to its destination.

You can have your agent run the showings by installing a lockbox (MLS or mechanical) and also have them put it on the MLS as well.

Your finance mechanism is 25% collateral. 

I was a mechanical contractor (HVAC guy) for over 10 years in the Raleigh area then my wife and I decided we needed to make some changes.

Buyerwill be responsible for any costs incurred by Buyer for any inspections or certifications obtained according to the terms of thisAgreement, and any costs incurred by Buyer for: (1) Title search, title insurance and/or mechanics' lien insurance, or any feeforcancellation; (2) Flood insurance, fire insurance, hazard insurance, mine subsidence insurance, or any fee for cancellation;(3) Appraisal fees and charges paid in advance to mortgage lender(s).The listing agent says my realtor forgot to check this part off:Buyer and Seller agree that if there is a dispute over the entitlement to deposit monies that is unresolved_______days (180 if not specified) after the Settlement Date staled in Paragraph 4(A) (or any written extensions thereof) or following termination of theAgreement, Whichever is earlier, then the Broker holding the deposit monies will, within 30 days of receipt of Buyer's written requestdistribute the deposit monies to Buyer unless the Broker is in receipt of verifiable written notice that the dispute is thesubject of litigation or mediation.

Then there's mechanical and plumbing.

Then do the math on the potential return on real estate with heavy emphasis on any potential downsides for self awareness.  

What is your finance mechanism?  

That is probably just Investment in Fixed Assets, items that have to be capitalized due to having a useful life beyond 1 year, generally replacement of mechanicals, roof, appliances, carpeting, etc.