I get the impression that she has done as much as she feels safe doing.
This rings true. He is very controlling, we've seen that with those who finally wake up to his manipulation. He is quite a dangerous person and he does seem to have kept Dijanna's family to ransom to a certain extent. by the sounds of his previous rants.
Jana is just another victim of his manipulation. Narcissists and sociopaths are very good at seeking out empathetic people. But that does not mean those empathetic people should blame themselves for being sucked in. No one wants to see another person to be somewhat of a questionable character.