Oh and also I read this book which talked about the 45minute intruder...so true and was the case with my boys. A sleep cycle is about 40 minutes and at about 3 months they can start waking after one sleep cycle. They need to learn to settle themselves again if this is the case. Sometimes they might only be sleeping lightly and still crying as they pass into the next sleep cycle, which might be the case if her eyes are still shut.