Not just location, but different states can have different (sometimes weird) rules like here in Texas where you need a manual third party "attorney review' on every loan doc set - adds about $100 to each doc cost that doesn't apply in most states

The hard part is actually remaining disciplined to manage that emotion and not losing that conviction when it does get ugly.  

I probably wouldn’t mention your third point - it makes it sound like you expect them to hold this note forever and I’m not very certain, but I’m guessing there isn’t a huge market for $100k secondary notes.Have you considered asking them to finance 90-100% for a short period of time so you can rehab and refi at a higher valuation?

We have had multiple phone calls with all parties, and our owner has taken time to personally speak with him as well.

The more serious the major the less time to party.

Are both parties represented by legal counsel?

Quote from @James Kerson: @John Warren though I’m a licensed Ohio broker, I’ve used that license exclusively for third-party property management assignments and to get the buyer-agent commission on some SFR deals.

If the loan is not being serviced by a third party then odds of getting this are going to be slim as most mom and pops don’t know how to do this but yes they should.  

Titan was able to track the funds to verify that the second attempt did in fact go through (with no need to try for a third time!)

Are you saying that together the 3 sisters qualify for a 2 bedroom unit, but you're charging them more on a separate agreement for that third bedroom?