Why did she look at your crotch?

Answer 1

A woman could look at a man's crotch for many reasons. The number one reason is that she's looking at every part of you to see what you look like. She could also be checking to see what size basket you have <g>

Answer 2

It could be for various reasons such as curiosity, habit, unintentional glance, or as a sign of discomfort or unease. It's important to consider the context and not jump to conclusions.