If theres a meal we're at together, home, restaurant, wherever she always samples things off my plate. She never orders dessert, but will happily try and nick some of mine.
It has got to the stage where I go to great lengths to avoid sitting anywhere near her but the last time we were together she actually moved seats to be closer to me!
DH thinks she sees it as some kind of female bonding. Bond with someone else I say Other than confrontation which I want to avoid (because lets face it with her it would be like pandora's box ) how can I deter this particular obsession.