I have seen dogs like this that are never able to get alone. If you have tried everything in the article, but nothing is working, your only two options are to leave the dogs separated all of the time, or rehome one of the dogs.
I know that this solution sucks. I have seen people cry over this. All I can tell you is that it happens to people too. Think about your worst roomate, and now imagine that the roomate also came into your bedroom each night when you were sleeping and slapped you around. That is what it is like for your dog. She is living in a terrible world, one where she can never relax.
Try everything first, of course. If you do rehome one of your dogs, you still may be able to get another dog later, but the new dog should be of the opposite sex. Your female may tend to bully him but is unlikely to attack and hurt him. That almost always happens with two males or two females.