Whether or not a 9-year-old girl can grow taller has little to do with whether or not she is menstruating, and is mainly related to whether or not her epiphyses are closed. Menstruation is not necessarily related to the ability to grow taller. To determine whether a girl can grow taller, you should go to the hospital to take X-rays to see whether the epiphysis is closed, if it is not closed, even if the girl is menstruating, she can generally continue to grow taller. Daily need to maintain adequate sleep, maintain the normal secretion of growth hormone, balanced nutrition, not picky about food, supplement protein, calcium and other nutrients, but also should adhere to the exercise, such as practicing volleyball, basketball, gymnastics, jumping rope, jogging and swimming and other sports. If the epiphysis has been closed, then the possibility of height growth is small. If there is no growth in height in childhood for a long time, you should consult a doctor in time and be treated under the guidance of a doctor.