It was not story plagiarism, but rather the a character or two that she drew. It matched way too closely to the original.
Here it is the forum post,
http://www.mangashare.com/forums/thr...-reason%28-%29
http://www.tv.com/shows/d-gray-man/f...84259-1271494/
The second URL makes it out to be speculation, so who knows. I guess I believed it after seeing the first URL's pics.