Petstore vs rspca new guinea pig?

You are going to have to watch this very closely. I have found hogging the food is one of the biggest issues when trying to put two females in the same cage. My Miya loves to have cage mates to cuddle with, however, she refuses to allow anyone to eat in her cage or any cage she is in with another guinea pig. Yes I do admit she is a very spoiled guinea pig and thinks she is a people, but i have a feeling form the things i have encountered it is a quite normal problem.