Considering she is only a year, you probably can help her behavior out and maybe even resolve it. But you likely need a professional who is familiar and experienced with these issues. Otherwise, try to keep food separate from the group, until you've helped her with the issues. The more she feels the need to brawl over the food, the more the anxiety and issues will escalate.
My older dog has food issues and when I first got my pup, he bit the pup over a simple treat. The puppy had a treat and dropped it. Older dog went to get it and bit the puppy. I kept them separate and away from any food at the same time. Just the other day, after trust had been built for over 2 months, I threw some treats on the grass for the puppy to sniff out. I was writing outside and wanted to give pup something to do. I didnt realize the back door was open, and when I looked up, the older dog and the puppy were sniffing out treats together and sharing just fine.
It doesnt always workout that easily, but sometimes it does. You just need to not let the problem escalate until better trust is built between the females, or you get some professional help.
Good luck
