If all tests your daughter has done are normal, just LET HER BE !. Don't ruin
her health with hormones or birth control pills or any other medication. I am a
doctor and I have seen many girls like this, being perfectly normal. If she is
vegetarian, this may be the cause of a PERFECTLY NORMAL sublimation of the
menses.

Read this link or better try to find the book of dr Raymond Bernard
" Physiological Enigma of a Woman"
http://books.google.ro/books?id=a82UXcSRzMsC&dq=Physiological+Enygma+of+a+woman&\
printsec=frontcover&source=bl&ots=nIYgm3Nh0O&sig=gKWKM963f6h_Zj6QxMw43tU1Q1A&hl=\
ro&sa=X&oi=book_result&resnum=1&ct=result

and you will understand more about it.
Don't worry and don't put any pressure on your daughter suggesting that it might
be something wrong with her, if all tests are normal

Wishing you all the best

Andreea
______________

My daughter had 3 irregular periods at age 12. She is going to be 16 in May

and has not had a period since April of 2006. The endo has done all sorts of

tests...they can't find a reason.