The 11-year-old girl 150 can still grow when she has her period, not that her height stops growing when she has her period. If the epiphysis has not closed, you can continue to grow.
It is normal for an 11 year old to have a period, and if the epiphyses don’t close after the period, you can continue to grow taller. The rumor that you can’t grow taller after menstruation is unscientific. Moreover, height is related to genetics and nutrition.
If the parents are taller, the child’s height will not be shorter in general. If the nutrition is balanced and there is no malnutrition, the physical development will be better.
It is recommended not to be too nervous, you can give your child appropriate nutrition, eat more food rich in calcium and protein, do not stay up late, ensure sleep. More outdoor sports, such as jumping rope, playing ball, etc., is conducive to growing taller.