Maybe she's craving some greens in her diet. Have you ever tried buying her some wheat grass to nibble on? You can buy it at most health food stores, some grocery stores, and of course pet stores.

I still remember how shocked I was when I was eating a vegetarian pizza and I walked away from it to get a drink. I came back to see my RB Starr running off with a piece of broccoli. My Storm also ate some acorn squash once by mistake. He made the funniest face while he was swallowing it so I don't think that he really enjoyed it.