Tell them they have to go, no matter what, but that you will reward them if they leave peacefully and/or quickly.

Hi Christopher, I'm a realtor in the area and I thought I'd run some numbers for you just to get a better picture of the risk/reward of a LTR vs STR.Currently netting $250 a month on the LTRIf you rented it as a STR on a nightly basis for $135 with an expected estimated vacancy of 56% (average for the area) that's a gross income of $21,681 less your mortgage $17,400 and less expenses such as water electric and internet of an estimated $4200 puts your annual net at $81.To make the STR profitable for the additional work you'd have to rent it for more than $135 a night and for more nights than the Nashville average of 44% occupancy. 

Balancing risk and reward is crucial in real estate investing.Bottom LineThere’s no one-size-fits-all answer.

Reap the rewards likely after that.

Have them include a risk reward matrix and a review checklist.  

Notes and private money are other options and there are books on these subjects.What it typically amounts to is risk, reward, and effort.  

I know, it sounds rewarding at first, but it ends up downright depressing.

Everyone has to balance their own risk / reward preferences.)I would continue to follow real estate, follow the conversations in the forums, save money, watch for opportunities (there are always diamonds in the rough that are out there - you just have to find them), and work to move yourself to the best position to be able to be an investor.  

They are saving a woman, rewarding her way beyond what she could do herself, and making a profit while doing it.

Using basic risk vs reward metrics, you're increasing your risk by allowing an adult to be in the property and not a responsible party to the lease, but you get no additional reward.