just a mental exercise on how could one accomplish this.... 

If they're on disability and don't have a job or a large volunteer commitment and they're not obviously physically disabled, get a full confidentiality release of their mental health history so you can determine if you can cope with having them as a tenant. 

I would stop putting this much mental energy into this topic.

I definitely had the mentality in my 20's that you just buy the property and hey!

If she is unable to have a civilized conversation then maybe you need to put some showing notes in your listings to the Agents to just beware of the neighbor who suffers from some kind of mental health issue <-- not too sure if you are allowed to do this since technically I believe this is a protected class but I would maybe consult with your local real estate board.

How many times can you do that with a contractor before it becomes exhaustive on the investors part?

It's a "take the hill" mentality.

Any intelligent investor will not have a never sell or always sell mentality. 

They don't do shortcutsThey do what it takes, whatever it takes.Trust me, the second you change that mindset, you need to go back and read your BP post again and you will say "wow, I have grown a lot mentally".

I don't think Cozy would work in my situation because of the different backgrounds. ie. some tenants are elderly and don't understand that stuff, I have a tenant who is mentally disabled and wouldn't be able to do it and several that are low income and like I said before, only deal in cash.