Dear Dr.
I am leaving in Saudi Arabia since long, and Alhamdolilallah trying to raise my son and daughter by Islamic way. My question, at what age we can inform daughter about periods and other girls adult things and something for my son about adulthood Or there is no need to educate them now, as we are not leaving in western culture. Currently my daughter is 11 and Son is 14.
Thanks in advance.

It is not uncommon for girls to start having they period and cycle even at 11 and by 12 for sure. So it is past time to tell her about these things.

You need to tell them age appropriate as fr chuck said. As far as relationships I would tell her not to let any guys sweet talk her type speech