She did get treatment but we lost touch so I’m hopeful it’s what she needed to stay healthy. we have gone on to do over 450 deals since that one closed March of 2017.

And since the borrowed money is fixed, and assuming healthy and stable occupancy is possible, the cash flow performance can mostly be influenced only by raising rents ahead of rising operating costs over the years.So...

Did you have a hard time maintaining a healthy relationship with your friends while being their landlord?

Apart from these percentages, healthy cash flow (i.e. income at least 1.5x monthly expenses) and the wiggle room to afford a visit from a handyman or a vacancy here and there are both soft metrics that I would focus on. 

I have experienced, first hand, so many healthy people drop out of the blue, as young as 40s, but often in their 50s and 60s.

She seemed pretty healthy and with it in the photos.

Here's a healthy discussion of Pace Morby specifically.https://www.biggerpockets.com/forums/79/topics/1001612-pace-morby-mentorship

I don't remember exactly what it was now but like @Don Konipol they are looking at it like a business and if the property doesn't perform as a "healthy business" then they are out on refinancing.

Thank you for your feedback in advance , be safe and healthy.  

Even if you invested years later, there is still PLENTY of meat on the bone for a healthy profit.