From what I can piece together, I think LK has a long history of bulldozing people whom she boards and trains with, engaging repeatedly in these kinds of scare tactics, and felt she could continue doing it forever. MB, after being so bullied with threats of this and that he slept in an office (she stood outside his door screaming “I will destroy you” in the house), was then accused of child abuse — and snapped, went to the main house and shot her, probably intending to kill himself after.
no one deserves to be shot. At all. but at the same time, you can’t expect no one to ever fight back when you ride roughshod over their lives. She is lucky it hasn’t happened before. Her luck ran out. He will go to prison for a long time, and she’ll have to deal with her health issues. I feel sorry for them both. It is a tragic story.