She doesn't have one.
This explains everything:
link The link is from Stephenie's official website and says (and I quote)
"For those of Du hoping to find an E-Mail address oder a way to contact Stephenie — I apologize. There is currently no way for Fans to get in contact with her. Stephenie is still much too busy to re-open her Fan E-Mail oder schnecke mail addresses. Also, I cannot vorwärts-, nach vorn emails. She is in the process of writing/editing multiple books, and I think we can all agree that we would rather that she spends her time Schreiben instead of Lesen thousands of emails every day."
