How do I handle a tenant with a dog that peed on HVAC? Late rent?

[Hunter Copp]

So we inherited tenants from the previous owner and now have to get the HVAC unit replaced because the dogs piss left a whole in the outside unit, causing Freon to leak out. This has prevented the unit from being replaced due to significant damage. Its an older unit so we decided to get a quote from a company and they came back with the cost being around 5K to replace. Prior to this we had two more companies assess the unit and stated that the significant damage to the unit was caused by the owners dogs. After getting that info we decided to spilt the repair cost with the tenant, 3000 for the tenant and 2000 for us due to the unit being a little older. She said she wouldn't be able to pay that right now, so we offered to come to 2.5k and are open to payments. How would you pursue this situation and what different options are there to try to get as much of the money for the cost of repairs back, so its not fully out of pocket? On top of that she only paid half of the current months rent and not the utilities, stating she would get the rest to us by the 15th. I am based out of Waco, Texas and was wondering the rules on that situation and the process for eviction if it comes to it.