Why did she not respond to my love letter?

Answer 1

This is a question many young men (and women) may ask. Generally if a person to whom you wrote a love letter doesn't respond, it's their way of saying that they're not interested without having to come out and say it.

Answer 2

There could be various reasons why she did not respond to your love letter. She might not feel the same way about you, she might not be ready for a relationship, or she might be unsure about how to respond. It's important to respect her feelings and give her space if she needs it.