She is awesome. I found an illustrator who uses charcoal, pastel and pencil on mylar surface. I also know that some colored pencil artists use mylar.
Check out this guy from tijuana, Mexico
www.artnexus.com/ANnewsdetail/14380
I found an artist who works with "charcoal on mylar". Don't know what that is, my book says something about "polyester"!? Anyone??
The artist is Mary Borgman:
http://www.annnathangallery.com/pages/mary_borgman.htm