K.W.
Don't you wish you could go back to the "terrible twos" now after age three two doesn't seem so bad, I have 3 kids and right around this age they start to gain their own identity seperate from you its normal even though you don't feel that way now, just stay consistent in whichever method of discipline you choose and refuse to get her anything for screaming tell her you have to ask nicely or you will not get it. This may be hard at first but do it every single time, once you give in they know that if they put up a big enough fight you will cave, believe me I'm still working on my 8 year old, she was fine for a while and just recently she has started doing this again. (could have something to do with her three year old brother....) Also I did notice that one of the other Moms mentioned diet, my friends daughter has melt downs and fits like that if she eats chocolate, they didn't put 2 and 2 together until she found info on the web about it and observed her behavior when she had choc. Even choc ice cream sprinkles can do this to her. Just something to think about, good luck stay strong:)