A 14-year-old girl can still grow taller if her epiphyses have not closed; if the epiphyses have closed, she can no longer grow taller.
The age of puberty is around 11~14 years old, and a few girls can be extended to 16 years old. 14-year-old girls are at the end of puberty, and to determine whether they can grow taller, you can take X-ray films, such as forearms, calves and other parts of the body.
If the epiphysis of the long bone is not completely closed, you can continue to grow taller, pay attention to more sports and exercise, supplement nutrition, ensure sufficient sleep, etc.; if the epiphysis of the long bone has been closed, you can not grow taller.
To determine whether you can still grow taller, you can go to the hospital and let the doctor measure your bone age.