I was able to get in touch with the owner, who is in a nursing home.

2) Sell the property and use this money for a house hack on my next home (build out a mother in law) and rent it? 

I am qualified for a 203k loan and can probably qualify for conventional loans as well, as I work full-time as a Registered Nurse (RN) in a hospital.  

There are also many, many traveling nurses and I know that there are dedicated websites/services that advertise directly to them.

I understand I should be finding oil/gas industry, nurses, hospitals, etc but I don't know how to connect to the right people.   

My wife, Kerri, managed a 2-family as STR here in Wolfeboro and her mother does AirBNB on a room; that first one is now full-time rental that she manages. 

So I have to go through their daughter which then has to relay everything to her mother(owner).

My children and I live with my mother i pay many of her bills and care for her (she is severly disabled and elderly and this saves me money to invest and save) the house we live in will be mine.

Look into traveling nurses too.

Sometimes they will lease housing for 3-6 months for visiting doctors/nurses/professors and are willing to pay a higher rent.Airbnb/short term rental if local regulations are allowed and doable.