This is the case everywhere, not just in Asia... when my daughter go to that age, I asked a whole lot of very wise older women to hold a circle and welcome her 'moon time', and they all shared their stories about beginning to bleed and encouraging her to speak honestly and without shame about it. It was a really important 'initiation' for her so that she doesn't think there is something wrong with her, that it is a perfectly normal part of life, and a necessary one also.

Good on you!!!