Indian moms and cleavage policing?

Why why why just why? We we were at the tailor's today and I was getting a couple blouses/a kurta stitched. Now for context I have broader shoulders and like my collarbones which is why I prefer low cut v- necks.

My mom and I had a very turbulent relationship growing up. It has been abusive for the most part. I had all but cut her out of my life and despite sharing the same residence we've had very minimal interaction since I started college. Upon my dad's insistence, she's been trying to repair our relationship before I leave my city and go off to get my master's elsewhere.

A cousin of mine is getting married and she insisted that she go shopping with me. No harm, no foul. But when we go to the tailor's the cleavage policing was INSANE. I wanted everything to be low cut and v neck but she literally GRABBED the measuring tape from the tailor's hand and said "BHAIYA DO NOT LISTEN TO WHAT SHE SAYS, I SAID 8 INCHES DEEP ONLY" Like what??? I asked her why she was being so authoritarian, and what'd happen if the neckline was just half an inch deeper. She said, "well why do you want the neckline to be deeper? Do you want your bits popping out and making a show? Just because you're used to dressing a certain way with us doesn't mean that the rest of the world is as liberal. You don't want to flash your perverted uncles at the wedding, they have no self-control."

I was at a loss for words. I'll secretly shop for myself now onwards. I hate this. I feel like throwing up.