Depends on puberty
That really depends on a lot of factors and when/if she has completed puberty
Most girls have completed puberty and linear growth by 16.5 years. Average onset of periods is 12ish but may occur as late as 17, and a small percentage of women will have some growth after 19. Body fat increases, lean mass decreases. Periods regulate better. Weight increases slightly. But overall not a ton of changes.