Have you actually asked her where she prefers to live? Has this conversation been had?
“D14, as we go through this divorce, I want to make sure you have a safe and happy home. Custody will have to be worked out and at your age, you have a say. Can you tell me what would be acceptable to you? I want to take your preferences into consideration as your father and I move forward in divorce”
Yes we've had this conversation numerous times. The final answer is she wants to live with him.