Maybe she's passive aggressive.
Mine sort of do the same thing. I feed Oksana and Vlad on opposite ends of the counter, Maks and Kiska right next to each other and Czari a couple of feet away from Maks. Vlad will always want Oksana's food, so I have to block him from bothering her. Maks will always try to eat Kiska's food, which makes Kiska then try to go for Oksana's food as well. Nobody however, messes with Czari while she's eating.
I just figure it's just them wanting what the other has, which is the exact same thing they are eating.
I don't worry too much about it because after they all move from plate to plate, they just come back and snack on the rest of their food. Everybody gets their fill.