M.B.
I disagree with the post saying that it is OK to give up on your husbands kids. As a teacher I had a room full of kids every year, some that were clean, polite and trying hard to please and some that were the opposite. I felt that it was my job as the adult to find a way to be there for the kids who were the hardest to love. Just because they have covered their hearts with hardness and bitterness probably planted by another person does not mean that underneath it all they do not need love the most. You are the adult in the situation and should rise above their pettiness and assume what I learned to call Deliberate Intelligent Behavior. It would have never been OK for me as a teacher just as it is not OK for you as a stepmother to ever say "I do not like you." and if and when I did something that is not right I would honestly apologize and say that was not right for me to say that. They are 9 years old. What I did do is in a positive way I taught them the way to treat me as I in turn always treated them respectfully. Your husband can play a part in this. "In this house we talk to each other in a nice way and we help each other and we make it pleasant for everyone's sake. It is OK if you do not like me right now, sometimes you make it hard for me to like you but in this house we will learn to be kind and keep trying to make things better because that is what family is about."
My first husband died when I was pregnant with our first child and she was 6 when I remarried and she was awful to my new husband. "Go away my mommy doesn't like you" and on and on. My husband and I continued to work with her and be patient with her and to have expectations of her and she is now 30 with children of her own and she and my husband have a wonderful relationship, but it was not easy but it was so worth it not to give up on. Always model good behavior and do not get pulled into competition or childish battles. Take the high road and renew your resolve to never give up on your husband's children. To me it is the same love that God has for us. He never gives up on us, even when we turn our backs on Him and act completely awful.
It may be the most important thing you do in this lifetime.
He will thank