When investing in real estate, I know your money is made when you buy and not when you sell.

I won't go into details here about what that means, but, would suggest that you check out their detailed videos that demonstrate how it works.4) It allows you to be able to immediately discover information about anyone whom you might be meeting with, before the meeting.

Buy it, fix it up, and build up equity to reposition into a bigger asset.With the profit from the house hack, you do have certain tax exemption.

I've always wanted to buy duplexes/triplexes in the area and hold as rental properties.

But you may be able to do option A for $10k or less in setup & furniture, esp if you buy the place fully furnished.

Since she is the sole owner and has the deed, this sounds like given the information you have provided the way to go 

Could it be as simple as finding a good Realtor, buying in a working class neighborhood, etc, and renting it out?

The problem is there isn't enough information and everyone uses different metrics to determine a "deal."1) What's the condition?

If you haven’t already, follow and search keywords STR, short term rental, and Airbnb — you”ll receive an overwhelming amount of information.

If there are owner occupants primarily buying in the area, what would it be worth to them as is or renovated?