It sounds to me like Domino is the pack leader in your household. The first thing i would recommend is take the leadership role from her. Remember Bostons were bred with some "Fighting stock" in them and are not all that fearful of much.

I am a firm believer in Cesar Milan's (Dog Whisperer) methods of becoming the pack leader, they really work! You can find his show on the National Geographic channel. He also has a few books out there as well.

You could also try using something unpleasant like a lemon spray that you can spray at the dogs mouth whenever she misbehaves in a way you feel in inappropriate.

Just a couple of the things i would try....

Good luck!