M.B.
She is testing your boundaries! She's prob pissed that you sent her to daycare and this is how she is expressing her emotions. My oldest turned into the devil when she turned 3 in may, but what I have learned is positive reinforcement really helps. She can throw a tantrum like nobody's business, but before she gets to the boiling point I distract her with something. (hey lets draw a picture, play a game, go outside, etc..) It works! I am a SAHM to her and her 21 mo old sister and I'm 7 mos pg, I HAVE NO PATIENCE! but distraction really works.Believe me it would be so easy to say give her a beating, but c'mon, that really doesn't teach them anything at all. And I used to yell all the time! That doesn't work either. Completely ignore her bad comments and behavior. When my daughter says something nasty or rude I just look her straight in the eye and tell her how much I love her and give her a hug. She has no idea what to do so she hugs me back! They just want attention!! I can't say it enough, I know it's not easy but you can do it! There are some days I want to run away, kids can make you more crazy and pissed than you ever thought another human could make you feel! I am telling you she wants your attention! And honestly if you feel you give her tons of "positive" attention than maybe she has a chemical imbalance and she should see a dr. But I really doubt it. Good Luck!!!