I have business cards with by Vrbo number on it. 

Rest due at closing) You can look at it anyway you want, but while you're looking, don't miss these financial facts:1- Cost to you = $63,6802 - Profit = $20,0003 - Remaining Cost not recovered = $43,680 (you don't make a profit until you recover all your costs, so the $20k "profit" in Item #1 isn't a profit...unless you think going to Vegas with $10k in cash, increasing your cash to $15k, then losing $30k is somehow winning $5k)4 - If, as mentioned above, you can get $350/month ($4200/yr) in rent...which if you were breaking even before, you would now be cash flowing $4300/year.5 - Unfortunately, that means it will still take you 10+ years (all being perfect) to recover the rest of your cost.6 - Still not a good deal...at all.

So my questions are:1: What is the best way to fund the rehab if it will not exceed $15k(optimism) either credit cards or my cash reserves?

I'm not sure on that though, since she's a business customer vs a normal "general public" customer.If it does fall under ADA, ESAs (ie, for "anxiety") wouldn't qualify.so if I understand you correctly you’re saying that even if she’s playing the ADA card, then Emotional Support Animal wouldn’t fit the bill? 

I think you have a real win-win situation here.

And congrats on the win-win seller financing deal!

It’s a win win win all around for me.

Not a winning solution.

If you go through a property management company, it's extremely likely their rentals will show on Zillow due to crawling, and of course other sources.There is such high demand for rentals throughout most of Arizona, that it borders on desperation for many soon-to-be tenants, and landlords hold the cards, not the renters.

You would need to find out the story for each property and see if you can problem solve and create and win-win for everyone.