Lease was signed before.

I agree that working with people is easier and more cost effective than the alternative.As I read this, I'm considering creating a Cash For Keys written program that I can give my tenants at lease signing to remind them to come to me rather than just stop paying. 

You could offer cash for keys to get her out-NEVER hand over any money until they are out and you have the keys and signed paperwork that they are out of the property. 

These things never seem to work out well 10 years later when you need them to sign stuff. 

Quote from @Tod DuBois: Another Furnished Finder POT cancelled on me after I went out of my way and paid to review them on Key Check and signed up for Key Check contracts, made two contracts, allowed a pet and still, two days before the check-in, they did not sign.

Quote from @Justin Buswell: Quote from @Sharron Ferrell: I am also considering signing up for the program. 

Here were the warning signs as I remember them1.

If you have IRA with Checkbook control then as LLC manager you would be able to sign the contract. 

Most victims of this company are now broke or worse, they are looking at the fall out of signing in full recourse loans that have been foreclosed.

Commercial properties can be lucrative, but the financing/underwriting required from lenders is generally more "conservative" relative to residential and usually have higher interest rates (unless you have a "rock star", long-term commercial tenant in place) and generally require more equity from the borrower compared to residential.