Terrible 2s-HAH, terrible 3's into 4s is whats going on!!!
dd#1 was nothing like #2. Whenever she backtalks, zoom the priviledges are gone. The one that is working the best now is removal of computer time, I just have to threaten it and she starts behaving.
The best thing I have found is to stick to your guns. If you threaten something you'd better be ready to follow through or else they know they can get away with what ever it is.
My one sil never follows through and boy can you tell, my neice is horribly rude and has no respect. We laugh behind her back and think it would be great to have the kid stay just 1 week at our house to see how the real world is. Imagine getting punished when you deserve it,hmmmm.