PMSL MG... Oskar is very similar by the sounds of it! When we go to playgroup if he sees food he heads on over and sits there like a seagull!! I think part of it is it's the "I want what I don't have". I'd just keep on explaining to her that she can't just take it off other people like that... something along those lines.. she'll get it one day and in the mean time try not to be too embarassed although that's easier said than done I know cos I get terribly embarassed..lol.