How old is your friend? If puberty is very late, then there
could be a problem with the endocrine system and a proper workup is
necessary. For example, a pituitary tumour can cause delayed sexual
development. If she has menses already and it is just a matter of
smaller breasts, then it may not be a medical matter. If she is
starting puberty slightly later it might be a good thing, cos'
when she starts she will probbaly end up taller than her
friends.
