Kwin, as most parents know, children can be exceptionally intuitive. Especially around the age you're talking about. Unfortunately they get caught in the middle of a game of tug-of-war (which in reality is a battle). The sad thing is that everybody loses something. The good news is that your daughter will still grow to be a well-adjusted individual despite the WTS and their delusionally trained leaders and followers.
My children were in that same age range when I started having doubts. I felt that I had left them in a spiritual limbo because I really didn't know WHAT to teach them. They were in their mid teens when I finally made the break (formally). Through it all they watched my behavior and the behavior/reactions of those (including family) that had previously declared their 'christian' love. Although it was ME that rejected that religion, my children also paid the price. Early on it became evident by the JW 'christian' response that their behavior wasn't 'christian' in shape, fashion or form. It is claimed that the JW manner of chastisement (shunning) is in actuality 'tough love' designed to bring erring ones back into the fold. From my perspective, it had the direct opposite affect. My children are now in their mid 20's, and they tell me that the JW's they run into are a bunch of 'loons'. They want absolutely nothing to do with them. I do wish their opinion of the JW's included understanding and compassion. And that might come with time. But for right now, I'm just thankful that the WTS didn't have the power to dig their clutches into my children's fragile young minds and hearts. And with absolutely NO help from the WTS, they are just fine. Thank God.
Now, I am the 'nana'. And I'm happy to say that the relationships with my grandchildren are based solely in love, not on what a bunch of psuedo-christian control freaks demand. There's great wisdom in learning the art of give and take. The JW's should be hard pressed to learn of it.
Smother your daughter with love, acceptance and understanding. After all, those qualities may be forever lacking from the JW direction.