I do agree that Dakota acting in a film like this at only 13 years old is crossing the line, but if you have ever listened to Dakota talk during an interview, you can clearly see that she has it together. She is the most mature, composed child actress I have ever come across, and she has been that way since she was 6 years old. It's truly mind-boggling. That doesn't necessarily mean that she is capable of playing any type of movie role in the world, no holds barred, but when you watch her and see what an obvious understanding she has of the whole process, it's not as if she is just an immature, clueless little kid.
I just hope she is able to continue being a kid for as long as she can, and I hope they aren't too quick to stick her in absolutely every type of hard-core film there is. She may be 13 now, but she is still very young, and while it's fine for her to branch out to more complex material, I do hope she stays with family/drama movies as long as she can.