Ziggy, If you read back through some of Kathryn's other posts you will realise her and hubby are excellent and empathetic landlords. As MP said give some people and inch and they will take a heap more. I am pretty sure (as is Kathryn) that these tenants feel everything else is their first priority and the "mean rich landlord" should be last in the queue!!
Kathryn did the right thing but is obviously stunned (as most of us are) that her tenants see things differently.
I guess that is where the misunderstanding lies - myself and ziggy are fairly new to this forum so don't know individuals yet. We have clearly judged from the sole perspective of that single post which didn't put Kathryn across in a very good light.
Just remember there are also guests who come to the site who don't know your past and judge in the moment! You are only as good as your last post!