Merry - I think you did a great job and I love the healthy boundaries you are setting. Lets see how your mom likes being disfellowshipped right back! I also think that she will probably now move you from "DF" catagory to "apostate" catagory. At the very least she will respond by attacking your mature and open minded philosophies.
Yipee for you protecting your daughter from that sick cult!!!
Good luck and keep us posted!