Remember that adorable chatty child who not long ago hung lovingly on your every word and considered you her number-one pal and confidant? Now she often seems like a glassy-eyed pre-tween who's turned ignoring you into an art form and transformed even the simplest request ("Please turn off the TV" or "Put your socks in the hamper") into an exercise in mind-numbing repetition.
Your child isn't deliberately trying to drive you insane (successful though she may be), and her maddening new behavior has more to do with her sense of self than how she feels about you.