Throwing food is a normal phase for this age. IME it just means they're done eating. Perhaps start off with a smaller serving of food and pay attention when she eats-when she starts to lose interest just take the plate right away and say something like "looks you're done eating". There used to be suction bowls/plates when my kids were small that worked ok, don't know if they are still made though.
12/5/10 at 5:38pm