You should try to get a copy of the video "Portrait of Giselle". I am a huge fan of her also, and there just isn't much written on her. This video shows Dolin coaching Patricia McBride in Giselle (I know, not the most typical thing, but she is quite beauitful) and interviews various famous Giselles. I think Kultur produced it. I got my copy by videotaping a copy of my teachers, though...