[QuickSilver]

From what I have seen, unfortunately, most of it boils down to very close supervision and keeping them physically separated. If it were just bullying that would be one thing, but if she's actually locking her jaws on another dog's face, that's very serious. I hate to suggest this... but the dominant female might be happier rehomed to a family where she can be the only dog.

I have seen basic desensitization recommended. Bring the two dogs together, give them both hotdogs while they sit next together, praise them for good behavior, give a time out if one of them gets aggressive. The thing that would concern me is the suddenness and viciousness of the attacks. Like, maybe you can get them generally more comfortable around each other, but you will always have to be on alert when the two are around each other, and I personally would be concerned that one day I might not be fast enough to stop a real injury.

I think at the least you should get a good trainer to assess the situation.