Here is the obituary from Publishers Weekly:

http://www.publishersweekly.com/pw/by-topic/childrens/childrens-authors/article/62166-obituary-kate-duke.html?utm_source=Publishers+Weekly&utm_campaign=4d7e92b6c1-UA-15906914-1&utm_medium=email&utm_term=0_0bb2959cbb-4d7e92b6c1-304440825