K.S.
A.,
I work in family law in addition I am a mom and my children have a step mom. It was a bumpy road at first because she thought it gave her the right to control a situation that did not need to be. My ex and I had a good relationship when it came to the kids and we had become friends. She got invovled and i resented her for trying to mother my children and getting between mine and my ex's relationship. My ex and I had agreed to get along for the children's sake and we had until this point. I refused to let her do this and it caused a lot of tension between the 2 households until she realized it was his responsibility. One thing I can say is make him be the one to talk with her unless you and her have a relationship to where you can. The step mom and I do get along now to where we can talk, but it took a lot of work. You will be the one to kiss their bobo's, read them stories, and give them additional love when they are there, but everything else is his responsibility when it comes to the ex. Do not tell them to call you mommy, because I can tell you that will not go over well with the mother. It sounds like you are doing all you can as it is and that your soon to be step children adore you. Just try not to make them feel like they have to choose. If she tries to make them just be reassuring that they do not have to.
As for your wedding congradulations. My fiance and I are getting married in August. When you have your reception are you wearing your dress? If so I would suggest that when you have your reception buy her a beautiful gown and a tiara. Maybe buy her a necklas an present it to her at the reception. Make her feel like she is part of the planning of the reception.
Good Luck.