She can just take down the listing and stay, even though she’s ALREADY MADE MONEY off of a property that I insure, maintain & pay for some utilities on?

Aside from that you will need vey deep pockets to be able to build the infrastructure and carry the property for a decade before you see any positive returns.

If you can achieve positive cash flow with 100% financing that is you max ROI possible.

The main reason why I am "giving her a chance" is because I am not in a good position to handle this turnover at the moment. 

You can also drive or walk a neighborhood and look for poorly maintained homes and find the owner that way (this method heavily depends on your market)  it probably wouldn't work to well in places like CA

I currently work I  hospitality which gives me a lot of insight in building positive, ongoing customer relationships, and proper negotiating and sales tactics.

My question is how to tap into this positive equity to purchase another investment rental property?

More specifically, how National and global issues affect the housing market positively and negatively.

More specifically, how National and global issues affect the housing market positively and negatively.

If there is coverage for all three loans.