Answer her and end the message "I hope you will have a nice life" or something like that. She'll understand. Honestly it isn't worth it to be friends with ex, especially since there is many people out there who are super fun.

So I decided, I am just not answering her email. It's probably not worth it. Even if I am over her or not wanting to get back together, why rock the boat and allow for trouble.

Staying away from her is a sure way of continuing my new life and path without her negative effects. Sure, maybe I won't look great ignoring her again after writing to her, but it probably is the right move. She dumped me and left, why be her friend?

Even having to write on this site again just shows that anything connected to her is still a bad idea. The past is the past.