my baby girl being bullied

Remove the bully so that she is in sight but cannot join in with the others (a dog pen is suitable) - she could sleep in the original coup at night but just needs removing first thing in the morning if you don't have a seperate accomodation. This will make her lose her place in the pecking order, it may take a couple of weeks. Also make sure that you have more than one feeder and drinker - she cant guard both at the same time  . If this fails then buy a beak clip - these are available through the internet from the domestic fowl trust, and this will allow her to eat, drink but not peck feathers
Keep anti pecking spray or there is another thing called ukadex (very smelly stuff) and purple spray handy just in case.