It looks like a made-up name to me, too, Kat. There was only one other "Dujeray" that I found on the 'net -- regarding a legal proceding in Franklin County, Ohio:
http://centralohio.thesource.net/pubnotices/juv/2001/01/juv010108.html
That wouldn't be your child, would it -- before you adopted her?
If the name truly is a made-up name, you can always tell Dujeray that her name is an anagram of "Judy Rae" or "Audrey J."
-- Nanaea