I'm hopeful that things will calm down, but am keeping my options open in case they don't.

We've tried to remain calm and rational in the face of her attempts to intimidate us. 

Nothing beats the calm advice of a seasoned good 'ol county seat lawyer for providing you a practical plan of action based on avoiding, not creating, a lawsuit.While you could use the free services of the local county Bar Assoc Legal Referral Serviced (I was treasurer of the San Bernardino County Bar LRS some years ago) you are likely to get a better referral from an underwriter or in-house counsel at a title insurance company. 

What would a calm lawyer do in any situation?

Keep calm.

This shows that the dog has been tested by official evaluators that the dog not only knows basic commands, but that he/she reacts calmly to situations such as people carrying objects, other dogs, walking through crowds, etc.

I'd stay calm and understanding, but my responses all still ended up as "no."  

Spray painting, broken windows etc.Thanks for any, possibly calming, advice and reassurance 

The 1st notice was just to me, the second, the tenants got a copy and I had to spend time calming down the wife (my tenant) because the city cites the whole ordinance and she was going on and on about graffiti and vines, which I knew wasn't the problem.

It took me a few days to calm down.