I know you treat your daughter as your princess. As a father, I share the same sentiments as you do and well, I do really think that instead of coming up with the best birthday gifts for girls age 12 or buying them for your little princess, what is important is that you actually be there for her on her special day. As a parent, you need to keep in mind that your children only wants your attention and only wants to be with you always and as such, they would want you to be always there for them. Also, keep in mind that children tend to become more rebellious to parents who have less time for them, considering that it makes them feel less loved and appreciated. So, make sure that you appreciate your little princess and that you be there for her on her very special day, which is her birthday.