I did this with my eldest daughter and will do it when my youngest daughter hits puberty!
There is too much shame associated with womanhood and personally it needs to stop!
I bought her a necklace to mark the occasion that I knew she would love, and I congratulated her on her body doing what nature intended it to do!
The engraving on the back of the pendent says ‘May all your transitions bring you joy’’
She will probably have many in her life, going to university and living independently, getting married, becoming a mother, etc…
I am perimenopausal and on the happy day my periods finally end and I officially have the menopause I will buy myself a bangle with the same inscription on the inside!
Many of the comments on this thread reinforce a negative perception of menstruation, but it’s completely normal! As a mother I have always tried to remove a stigma associated with a natural life transition!
OP I think your idea is kind!