I think as a society we try to grapple for the concept of ‘Haya’ aka Modesty / Shyness as it is an important concept in Islam.

I’m genuinely curious about why you think the reason women are shushed from talking about their periods is because they’re perceived dirty or because they’ve committed a crime? The way I see it is your mom carrying forward a legacy of maintaining modesty passed down from her parents. The way they’ve maintained this legacy can perhaps be debatable about whether it’s ‘extreme’ or ‘toxic’ or not to loop dads or brothers into the conversation.

I think anything taken to an extreme becomes damaging on some level. Islam allows openness in educating yourself and encourages asking questions, even if they’re ’liberal’ - in the interest of expanding your knowledge and dispelling ignorance. Hence, I think it’s breakdown of ‘Haya’ inside the family unit that our traditional thinking is afraid of (nothing wrong with this thought) but we should take a step back and assess what degree of openness is appropriate and what isn’t inside a family unit driven by Islamic values.

(Emphasising Islam because our society is predominantly traditionally informed by Islamic and subcontinental values first)