Having a buyer of mine  ( land contract) forge the deed to the house so he wiped me out without paying me.. then sell it to another person.. he did not realize this other person was a detective.. then when confronted his attorney said his client is as stumped as I am.. 

I listened to the voicemail again and it sounds pretty non-confrontational and easygoing.

I wouldn't confront them unless you have proof.

The world is very much FILLED with those who would rather do anything than confront uncertainty.Now I'm not saying that this means you have to dive headlong into obviously suicidal risk, screaming "YOLO" all the way.

My mayor fear was going to court,  and I was able to confront both tenants.

Since there was a tenant currently living there, I would assume that some maintenance work had been done, but were there any major surprises that you were confronted with (repairs, auction process, etc.). 

I'm sure you can do an addendum to your lease adding the pet fee that both you and her sign.What was her response when you confronted her?  

It's part of my fault I am passive-aggressive and also would like to avoid a confrontation if possible.

It is always "making things happen" until it isn't.I also have had clients who are "non confrontational" say "Please ask him to stop calling me and just stopping over, he drives by 4 times a day.

Talk to her about it without being a pest or confrontational.