This resulted in a $1500 plumbing bill and damages to a downstairs bedroom.

Here is my take; humans can do just as much damage to a unit as a pet.

We had a break-in late December and had about 4k worth of damages, as well as another attempted break-in 2 weeks ago while it was under contract.

There's no water damage or anything.  

______All door stoppers must work and any damages from previous problems corrected.

@Jason Merchey - You can't use the last month's rent for anything other than last month's rent (for example, it can't go towards damages upon move-out), so I'd only ask for first month's rent and the security deposit.

. $100.00Laundry room 7‘ x 7‘ Water damage on ceiling and walls.

I would start by talking to your tenant to see if you can negotiate a termination that limits your damages and allows them to move out.

The fire insurer is not entitled, as subrogee, to bring an action against the tenant to recover for amounts paid to the landlord for fire damage to rental premises caused by the tenant’s negligence in absence of express agreement between the landlord and tenant to the contrary.

You have no damages and nothing to gain by pursuing this.