She doesn't seem to be in any pain. I'll wet her feed for a while, so her beak can heal. The littles have been with the bigs for maybe a little over two months. We've had no critical problems, till now. The littles are probably a little over 3 months.
So it sounds like they have been together long enough to knock off the silly attitudes.
I understand your coop is not how you want it.
If you can post a couple pics we may be able to come up with a few "easy" fixes to make it work better.