Passive aggressive behavior at its best.I will ask them tonight what they are planning to do when the children come, we have talked about all the things i need to get done, and how tight of a schedule i am on at the moment so I see it as they are taking advantage of me because after everything they are still lollygaging around.STOP ASKING.   

Classic troll behavior in this thread, Karen nails all of the Greatest Hits:- Comes looking for help, starts by belittling a polarizing group of people (realtors) in hopes to drum up support for her cause- deflects any and all blame or responsibility for her situation- quickly realizes that everyone is not on her side- offers support and kindness to those who agree with her plight- constructive criticism or actual actionable advice is met with personal insults, threats of physical violence, and questioning of one's political affiliation- ironically insults the intelligence and/or grammatical shortcomings of 'detractors' in several overly wordy, poorly written, and grammatically unsound posts.- mystical tales of connections with untold wealth and previous successes rendering the opinions/advice of her detractors moot.- continues to be blinded by how her attitude and behavior are the primary cog in this.Me:

It is entirely possible that the move itself into a new environment triggered this destructive behavior which the owner absolutely has to correct.  

The late rent payment fee is for incentivizing the tenant towards good behavior.  

He certainly has a right to expect certain behavior like illegal activity won't happen but he has to trust her when she is out of his sight. 

Having a history of mental illness doesn't necessarily mean that the tenant could become a problem, especially since he/she doesn't appear to have a history of problem behavior. 

Things like "rude behavior," references by non-related individuals, etc?

I know you are not alone in your attitude or thoughts to such matters, and that is exactly why we have laws, to ensure that landlords follow the norm of accepted behavior.

That kind of behavior is unacceptable and their broker will most likely be completely on your side.  

In all of those situations, you now have the ability to give notice to those tenants that they need to correct their behavior or get out, because you were proactive.