Stephenie Meyer has been nominated as Children’s Author of the Year based on her book The Short Second Life of Bree Tanner. You can see from the above graphic that she faces stiff competition from her fellow nominees. You can vote over on Children’s Book Week.
Stephenie was previously recognized by this group in 2009 for her work on Breaking Dawn. The awards were established in 2008.
EDITED: Please note that just like the New York Times and many other best seller lists, they do not have a list for YA books. They lump everything from Pat the Bunny to YA novels racier than Twilight in the wide-sweeping children’s books category. Both the Hunger Games and The Mortal Instruments series also contain mature elements. When they make these lists they are more or less looking at grade 6 through high school.