[Death by Mirrors]

She might have been raised in one of these prude households where people don't talk about anything sexual. Where young girls are told to hold an aspirin between their knees for birth control, and when they get their first period they believe they are terminally ill for bleeding out of no-no space.

After all it was the generation which grew up without internet. So if your family and older friends don't explain the facts of life, you're lost.