i think this is one possibility. imo though, given what we know about EG (violent past with others and JH, visitations only with her children, Lucas saying "EG doesn't like me anymore"), i think that the keyword in your post is the word "too".
imo, i dont think JH was controlling his wife and kids - if it is true JH was abusive, i think it was a shared parenting method & way of life in their household. only pointing this out because if there is a way to prove JH accountable to some degree, i'm all for it but i dont want it to take away or make it seem less for what EG did to Lucas (not that your post is saying that, just the trajectory that will maybe come from the public/media if JH as an abuser/complicit became a storyline). she still is just as guilty imo.