However, securing a loan overseas could take up to a year to close.

I did a DSCR loan the other month at 8% and $2,300 in lender fees.

The biggest threat to her not getting her money is you structuring a bad deal and then having to default on the loan!  

Will a bank see the same value that I do and be willing l do a DSCR loan based on LTR and STR on the same property?

You really need to have a term on your loan that is less than 30 years.

Instead, I gave her a no-interest loan; she wanted to get a new car and never had one before, so I bought the car outright (a sensible Kia Forte) and essentially gave her a no-interest loan.

She doesn't want to list it and sell it traditionally because of fees.She is offering a deal to assume the loan, and it is assumable, but the problem is, it's FHA.

Have you looked into a reverse mortgage aka HECM loan?

For example, if you refinanced your home at 7% interest and took 30 years to pay it off, it would cost you a total of $121,000 to pay it off, and you would be paying a much higher interest on your entire home loan. 

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.