there were a few other weird things from her, like another life threatening danger, a string on one of the window shades was apparently long enough that her 7 year old might be able to walk by and entangle himself and die from it choking him. 

If you shut them down and it really is a God thing that they are doing, you could be in danger of the Higher Power.

Letting your tenant know that you are the PM and the owner is a dangerous thing to do.

One warning sign "danger Africanized bees".

I have not had tenant experience, but living in Colorado for 25 years I have seen great setups that a landlord would have no worries and I have seen bad dangerous grow setups.

Estimating by yourself based on past numbers is a dangerous path to follow if you don't know the details of what you are talking about.

Is the mold detected even dangerous or harmful?

Disposals can be dangerous, clog at least some of the time, wear out, and encourage tenants to dump crap down the drain.

People that have an agenda driven by a disorder are at best a pita and at worst dangerous.

In a business that deals with services extremely close to most people's heart - their home - crossing the line from professional to personal is dangerous.