When I visited my aunt in Angono, I found out that my 14 y/o cousin kept having her first period secret from her parents and siblings because she was shy. How do you get your tweens and teens open up to you regarding this topic?

The first thing i did when i got my first period is to go to my mom and ask what i should do. I guess it's because my mom has always been very involved with us and she anticipated it can occur anytime considering our age. I think she did the right thing.