Correcting behavior..

So I have a dwarf roborovski, had her for a few months now and she's just a doll. For being a robo, she lets me pet her and hold her for a brief time.

I've started giving her tiny slices of cheese and she LOVES it. I know, it's bad but I don't give much. Now she's started biting the cage rapidly when I'm near her cage as to signal that she wants more cheese (I know this because she stops biting the bars and won't do it again until the next day after i have given her a piece).

I find this utterly annoying. Is there a correct way to correct this behavior without just full blown ignoring her? Not sure I'm just curious. I have opened up a can of worms I can't put back! She's the cheese diva.