Also, I once had this issue where tenants subletted to new occupants before I bought a property and they wanted their security deposits back, which was a strain/problem to deal with. 

The real question is, will sellers want to sell during the holidays or will we see a tightening to an already tightened supply?

Once they know that you're for sale, there's at least some chance they'll tighten your credit lines or even put you on COD - and that's probably going to come up during your buyer's due diligence.And when will your buyer think when he discovers unfavorable credit terms with your key vendors? 

Seems like you have a good relationship with her, but adding a financial aspect to a family relationship can definitely put a strain on things even in the best case scenario.I'm probably reading way too much into this (again, sorry!)

Interest rates have started to rise, so that may take a little heat out of the market, but it also has increased my buyer's willingness to be even more agressive, because they know rates will rise if they can't get an AO now.I start wondering, is it possible that the RE market will go into a shock, where people are not selling, because there is nothing to buy - and this is becomming a self-tightening knod?

COVID has changed everything and created tremendous stresses on a housing situation that was already strained.  

Due to so much fraud from roofers and so many hurricanes/natural disasters recently in FL companies are tightening requirements to be covered, reducing coverage, and increasing rates.

Job growth remains consistent, and new construction regulation is tightening and getting more expensive.

Feels like they've really tightened the purse. 

Banks are tightening up requirements across the board for sure.