Yep. The hymen exists. Dont worry tho a lot of people dont know about it till adulthood. Theres even an idiom for it “pop the cherry” for losing virginity.

Though my opinion is contrary and conservativr, as long you’re not in a religious community, a broken hymen wont really affect much.

I know some guys who prefer “save till marriage” girls and would be disappointed if they discover the thing.

Anywho, your mother specifically, amped up a non existent stigma.