If you can wait until the lease is up, that's going to be the simplest option. 

Buy and Hold - Simplest strategy with least risk.

I am a big fan of the idea of Occam's razor or finding the simplest solution to a problem with the least amount of steps or variables.That being said and not knowing your exact specifics I will give you an example.You could buy 7 houses in Lansing, Michigan for $50,000 each for $350,000.

Nor of the simplest most basic research to have an ounce of a clue who I am at what I stand for, more or less my age or nationality (when I speak of 2nd/3rd world nations, it's because I have actually been to them). 

A lot of ways to go about this situation but I believe the simplest way is to charge the downstairs tenant a flat rate (say $35 dollars a month).

.- why do you need financial advisor when it's the age of AI and robo platform :) LOL. be your own financial advisor, it is not that difficult, the simplest thing is to just put in wealthfront, that's it.- having 2k or 10 mil from inheritance or company stock, doesn't really matter these days.

In simplest terms for me, rentals and real estate in general is a scarce resource and a required asset for people to live.

The simplest answer I can offer is - "when the numbers don't work".  

Simplest solution I can see; place your full 44K or whatever it is in escrow now so she can see that the money is real and there's nothing you're doing to get out of the deal. 

Typically the simplest solutions are best.