We had that problem for a few days--when Oscar first came and we were trying to feed them different foods. I finally gave in, mixed the foods together and put two separate small bowls out for Emmy and Oscar. The bowls are
exactly alike (I tried 2 different color bowls--that did not work--for whatever reason). They don't have a certain one they eat out of, but they seem to just munch out of whichever is the closest when they run by. When we sit down to eat, I move one bowl by hubby and one bowl by me. They will each pick a bowl and eat--with no growling. For a couple of days, prior to mixing the foods, I also did the handfeeding option--1 for Emmy, 1 for Oscar. It worked, too, but took TOO MUCH TIME!!!!!
Good luck with feeding time--your little lady is just showing big boy who is boss! hehe