Dear Brandi,
Blended families are the most difficult, the divorce rate is extremely high I think you probably are aware of that.
Your husband feels guilt, as should you, for what his daughter and your children have gone through.
Does your husband's daughter live with you, your children and your husband or does she just come to visit her dad in your home? Which technically makes her a weekend guest Brandi. Do you expect your other guests to do household chores when they come to visit? She has chores, I'm sure where she lives (probably with her mom).
If she lives with you and your husband does your husband's daughter have her own space in your home? If not, where does she sleep when she visits? Boy going from house to house must be difficult for a 9 year old! How do you and your husband's daughter get alond Brandi?
How long have you and her father been together? How long has he been divorced from her mom? Remember something Brandi every most children want their parents to be together, even when they faught.
You are the new woman in her dad's life. And now where does she fit in to the picture? Not only do you represent a reason why her parents can not be together (in her child's mind) but additionally, with your cozy new family set up where does that leave her? How does that make daddy's little girl feel?
Of coarse, your husband if he has half a paternal bone in his body will be protective of his daughter. His daughter should have been the first priority to begin with. If he could not work it out and remain with his wife (I am assuming it was divorce- perhaps he was widowed)so his daughter had an intact family than he should have remained single until she was much older. As should you.
His focus and yours should have been purely on your children and your parenting not on your love lives for reason's such as these until your children were all older and or 18 and out of the house.
But that did not happen. And I would anticipate because of his guilt that if he is half the father he sounds like his daughter will continue to come first and you will always come second. Oh and do me a favor please don't complain about child support or money he gives to help support her.
Our children do not adapt as well as we wish they would to these circumstances divorce, death, remarriage and new babies, our love lives and dating. Whether she demonstrates this to you in obvious ways or not. She is 9 years old and can't articulate all these things yet.
I hope that this will give you some insight into how divorce and remarriage can effect all memebers of the "family".