A mom in needed of help

my daughter is three years old and it almost seem like this son knew my chldshe is very smart. at age 15onths she knew her abc"s to g andnow she acts like she ca't even say the to c and she talks back so bad etween her lying and talkig back if she was not my child i don't kow that i would like her h does things like plays m nd her father agaist each other all ready and speaks about things that no three yr. old should know about and it akes me and her father upse because we don't peak to her in that manner . I love my child but i can"t take thtalking back and lying what do i do????

One mher in need

[Sandman2]

  It sounds like you have a very smart 3 year old who has figured out how to play the game better than you have.  Please post to the child behavior forum.  This is not an ADHD problem, but is one that the posters over there have dealt with many times.  In fact take the time to scroll through the posts about "my out of control 4 (or 3) year old", and you will see what I mean.