My current focus is getting place back to rent ready and just based on quote the security deposit will not be able to cover the amount of damage she left behind. 

We've never asked a tenant to make any rent or deposit payable to us personally and we are not on the leases other than as an agent or regional manager.

As Mr Brandon Turner mentioned in his book on "Managing Rental Property", we always require our tenants to pay deposit and first month's rent before or during lease signing via confirmed payment such as demand draft or cashiers check.Due to pandemic and to comply with our social distancing guidelines, we are planning to do e-sign this time and not meet if possible.

Now, how do I get all rent money back if I need to do repairs out of their deposit?

I would say the main criteria include safety of principal, liquidity, and a rate of return equal to or preferably a bit ahead of inflation.

In this case I get a $500 or so deposit and get the balance 2 to 4 weeks prior to their arrival.I have alot of families and get more checks than anything.After their stay I send them back their security deposit via the same means they paid me.My repeat customer I don't charge a security deposit.

Yes my experience has been pretty much the same with section 8, also unclean but usually security deposit covers and they stay for a while. 

I had two singles that moved in, with a similar background, but they were not a couple and paid separately and thought of their security deposits and responsibilities as separate. 

Some PM's charge a double security deposit if they want to move fwd on a candidate like this.

Make sure you consult with professionals before doing an inspection and paying for appraisal to find out that the home cannot be financed with your deposit at risk.