Additionally, most leases address this issues and provide for cures should the unit become uninhabitable and allow for the tenant to break the lease after a certain period, and even if the lease doesn't contain a clause that says so, most states landlord tenant laws address this issue. 

Make sure to leave 24hrs between coats and it needs a week to fully cure.  

Again, not to quote Trump again but we can't let the cure be worse than the disease. 

If the lease says no pets you could send them a 14 day notice to cure.

If not post a 3 day notice to cure or quit and charge late fees. 

(maybe the vanity too if painting it won't cure it).

All results are good, long term, as long as you have value, proper legal security/collateral, buy at a safe LTV and have sufficient reserves to "cure" any potential bad spots.If you want to cash out your notes, you may have to sell at a loss if you didn't buy them deep/cheap enough but you can always sell them. 

Also soon as I find time, I intend to post a 7 day cure because neighbors have told me that the dog jumps the fence and I saw it out of the yard.  

Think of some cures...Search on Amazon for motion detector lights (they screw into existing sockets), and ask if the landlord minds if you replace the garage lights with those.  

The good news is, your tenant has obviously breached the agreement regarding how long the sister has been there.What I'd do, is give your tenant an official notice to cure or quit.