Give her no reaction.
Definitely a hard phase. Pick her up and carry her out, and let her cry, scream, yell, and fuss as much as her little heart desires. Just don't give a reaction. Don't tell her to stop, don't try to ration with her. Eventually she'll get tired of throwing these tantrums because they get no attention. They get no reaction.
I had to do this with my son and it worked. We went to the store, and he didn't want to get out of the car himself, he wanted me to pick him up. I gave him a choice. Either you get out of the car yourself, (since he knows how and I have another baby that cannot do it herself to get out) Or We'll just go home and I'll do the shopping without you when your dad's home and you can stay home. He refused so we went home, the whole time he screamed to go back to the store. I followed through. I took him home left him with the hubby and he tested me only once more before he stopped.
at 10:00 PM on Apr. 7, 2010