I have done extensive research regarding real estate and now finally ready to dive into the industry.

The industry is about people and personalities...and other intangibles.

She could do a owner finance deal and make more monthly as to the spread between her debt payment and the rent she could charge that is the average rate in that area. 

Just do what is average and not unique to the area you choose. 

It is just as important as the rental home you purchased.This Industry has to do with legal issues, and many lawsuits, and if you don't have the best to protect your investment, then you won't be in this business very long.I know, it seems silly to think that by investing in a financial software program verse Excel will make any difference at all, but it truly does to the person you want to borrow money from.

Yet in the Landlord Business (our Industry) people don’t view it as a business.

There is no doubt that the rents lag the appreciation but my units have been averaging over $100/month rent increase per year for each of the last 5 or 6 years. 

From what I've read and through my brief interaction with a lender, the rentals need to be traditional and I need to provide a copy of the lease.I know Quicken Loans allows refinancing through Airbnb income alone but is the rest of the industry just too far behind?

Just curious to see if my numbers are better or worse than the average.

In the banking industry we call that an "overlay".