I’ll tell you what I did. During the divorce proceedings I had it mandated in the court’s final decision (we arbitrated, and the judge signed it) that xh had to take the girls to a CATHOLIC church on Sundays and Holy Days which he had possessory rights. For the most part, he has adhered to it, and usually lets me take them in to early Mass before school on holy days during the week.
But if you have already ironed out your final decree, it might be late for that option.
Your real power is that YOU take her to a Catholic Church and instruct her in the faith when YOU have custody. And explain to her real early in life the difference between Episcopalians and Catholics. Make having a pope FUN! Be PROUD of the saints. And at least when she goes to Episcopal services, when she goes with you later, the Catholic services won’t seem entirely foreign.
She may not even understand there is much of a difference for a few years. As she gets older, it will be her choice which faith she follows. They do say studies show a devout father has a tremendous impact on the practice of faith in his children. So you have that going for you. Good luck.
This is just one of many areas where your values and your ex’s will be presented to your daughter and she will have to choose.