Tenants can sue absentee landlords for huge amounts for technical violations of statute. 

Technically the structure of Qualified Opportunity Funds since they are privately help (either C-Corp, or partnership) can accept investment from non capital gains monies. 

As much as I like learning new technical skills, I can't rely on myself for this especially since I'm not in the area.

I personally had $0 (technically less). 

@Brian Eastman, let's have a technical discussion.  1st, I agree with what you and the the posters are telling the OP, though for perhaps a different reason than is being expressed. 

PMI (technically MIP) on the FHA loan.

If you have a loan on the property, technically the bank can exercise their due on sale clause. 

Here’s a link to an excellent, if rather long and somewhat technical, discussion of that case: https://www.forbes.com/sites/jayadkisson/2018/03/05/alaska-supreme-court-hammers-last-nail-in-dapt-coffin-for-use-in-non-dapt-states-in-toni-1-trust/#337a197e62a7.

If she is unable to have a civilized conversation then maybe you need to put some showing notes in your listings to the Agents to just beware of the neighbor who suffers from some kind of mental health issue <-- not too sure if you are allowed to do this since technically I believe this is a protected class but I would maybe consult with your local real estate board.

I love to learn and want to get in on the real estate side, but I still want to be able to utilize my technical and design skills.