After the pups are gone do an inspection and charge tenant for all repairs, that is normal procedure for all tenant caused damage.

The procedure here is to send a notice of inspection and then enter the property. 

If she is behind on the rent, begin the eviction procedure for non-payment of rent.   

As your portfolio grows it will become too complicated to keep up with all the different terms and conditions if you don't stick to a Standard Operating Procedure.

. - - - Have a page dedicated to FAQ's, and your policies and procedures.

However I agree with a few others, that you should still screen her like everyone else, and if you have to evict add a section about how rent will be refunded following the same process // procedure and timeline that you normally would with a deposit. 

Take the service dog out of the equation and every single landlord follows the same procedure.

My text to her was about procedures for repairs.

I am being extremely proactive and shelling out funds necessary to comply with best-practice procedures in the face of a tenant concern in this area. 

For sure have your attorney advise you on the rules about rental deposits & procedures for returns and deductions, that is where you can get bit.Here is what I have found is best.