When she is eating something, gently approach her offering her something that she will see as higher value, something she prefers to what she already has. As you hand it to her she should drop what she has and take what you have. Pick the other thing up and take it away with you. Once she has got the hang of doing this, add a command such as 'drop' or 'thankyou', so that eventually you can use the command and not always have to offer her something better. This works because she will learn that giving you her food is a positive thing.
__________________ Indy, Benjamin and Malachi   There is no psychiatrist in the world like a puppy licking your face- Ben Williams |