Testing limits

H is so awesome! With just 3 weeks until her first birthday, she is totally testing me lately. She will sit and look at me with this devious look on her face and put her fistful of food over the floor. With a look from her fist to the floor to me she dares me to stop her. As soon as I say something to her ("Give it to Mommy" or "NO!" or "Let's put that on your tray"), she drops it. With the look in her eye, she might as well say "Nanananabooboo!" I don't know if it's because I'm tested by 13 and 14 year olds all day or what, but I am NOT good at figuring out what to do with her when she does this. I take away the plate of food or say something else about it and she bursts into tears. Tonight, the tears were so intense, she won and I picked her up out of her highchair to console her explaining why I don't want her throwing food on the floor. I think that just put me back a week in getting her to stop diong this. Oh God! She's already winning and she's not even 1!