And do the regulators regularly assess large fines for non-life threatening non-compliance issues?

You could try calling the cops if she acts up or threatens someone, but the outcome really depends on what race she is. 

In those years, I had tenants doing an adequate job, to ones where they don't get to mow till it's over 6 to 8 inches long and neighbors complain and threaten to call the town.I found tenants who take their mowing seriously are blue collar family types.

I said no, I sent you a check already, they are threatening to take me to court. 

The person in the basement almost started a fire which caused the fire department to come out, and when they noticed the third unit they threatened the owner with $10k plus in fines.

The buyers of our house are threatening to delay our closing time if they don't get to come in for a SECOND final walk through.Buyers—first time home buyers.

Sometimes putting a non threatening note on the door helps, which says something like “I am the new owner and would like to help you move.

Make it as mean and threatening as you can but most likely they won't pay and you will just end up taking the loss on your taxes.

I placed 50 bandit signs over the weekend and am now getting threatening calls to my Google voice number from the dreaded sign police!

The seller backed out last minute because the tenant was threatening to file lawsuit.