I have tried the ignor it dont bite back tactic for the last few years and it has got me nowhere. I am now if my stepdaughter ever speaks to me again going to start voicing my opinions regarding her behaviour and letting her know it's not acceptable anymore enough is enough. If you dont the only person getting screwed up is you she's getting exactly what she wants. You are arguing with your husband over this anyway and if you argue over the dicipline you now give so what he also needs to be re-educated in how to handle her. I have a 23 year old stepdaughter who is making my life a misery and has done for the lasst 5 years because I've just ignored it and not stood up to her but not anymore she's going to get exactly what she dishes out from now on and just maybe I can feel better about myself that way knowing I'm not living a lie and being a doormat. I have like you screwed myself up with the bad feelings I've had towards her but I wont let her do it anymore she doesn't seem to care who she walks on or upsets so why should you. Lets both see if a different tactic works xxxxx