You are again assuming what her thought process is.
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”