If she is still bleeding, my main concern would be that she has a stuck kit in the birth canal. She really needs to see a vet ASAP. An injection of oxycontin might help, but only a vet can assess her condition and x-ray her for a retained kit. Do you have an emergency vet available?
Is this her first litter? How big a rabbit is she? (How many lbs does she weigh?) How old is she? How big is the buck that bred her? (Weight? Breed? Age?).