Wavering Style of Parenting
If you have the wavering style of parenting, you may have limits but be inconsistent about following through. Do you do a lot of talking and not a lot of acting when it comes to discipline? My guess is that your child may be pushing the limits because of your inconsistency. She may even be taking advantage of your inability to anticipate behavioral troublespots.
If you waver in your limit setting and follow through, your child learns that sometimes you mean what you say but often you don't. This style of parenting encourages testing of limits because you child must test to know just what you expect of her.