Rivertrail,
I see no responses since April, but want readers to knonw that what I am finding is that the more troubled the first marriage, the tougher time there may be with the adult stepchildren. My situation was similar to Rivertrail's, with the ex-wife/mother having a delusional disorder which led to her being paranoid and mean. I didn't fully understand how that would enter my marriage to the kids' father. They were 32 and 37. The first thing I noticed was very little respect of the father, who is still today, a very dear and generous person. We've been together 3 years, married a year and a half. His kids did not acknowledge him on Father's Day or on his birthday. They were enraged that he remarried, and the daughter had a sense of entitlement regarding her father supplimenting her during her last year of residency, dispite the fact her income was $40,000/year.
What I finally understood was that my husband had spent many horrific years with his former wife. He attached himself to his children with monitary support, advising and took their rude and thoughtless behavior without complaint. It took my being a reality check and his going to counseling for an unbiasing opinion to begin to see the need for change and to begin to set personal boundaries regarding treatment from his children. It is a slow process, but it is happening. It takes a lot of practice not to fall back into old ways of being with the children, and I, his wife, felt the pain of their treatment of him almost as painfully as he did. It was so very sad to watch.
These days, he has much more confidence in working with them. As his self assurance grew, he began to be less concerned about their rejecting him if he stood up for himself and so he confronts them much more often.
These changes have been the breaking of an old family relationship status quo that developed to survive a very difficult mother. The mother is such a core of a family that when she can't be there in a typical capacity, the whole family is off center. The children are not taught by her to respect their father, and often a mother like that undermines the father to the children, so they don't learn how to feel respect. When the family spins off, away from the mother, the behaviors continue, regardless of how painful.
My husband and I have bonded together for his healing, his happiness, and ultimately ours as a couple. Once a father can understand how important changing so his kids can change is, then he can be brave enough to pursue help to make that happen. Oh boy, we still hit bumps, but we know it will take more than understanding for things to get better - it will take practice, practice, practice. And love, forgiveness and respect.