C.L.
She is only 3 months so is not producing melitonin yet. They start producing that at 4months. There is a great book called Healthy Sleep Habits Happy Child by Marc Wiesenbluth. I found it to be the bible for sleep for my kids. Have her get it and read it. It will give suggestions beyond belief and will be right on if followed. My daughter was just the opposite her stretch was between 430 and 10PM and then she would wake up all night. The book really helped me understand what was going on and how to over come. Good Luck!!