The hibiscus lady can be seen every Saturday at the Kapiolani Community College Farmer's Market.
You can see some of her work here: http://www.pbase.com/selvin/image/57198012

"Jill Coryell is that rare person who is doing exactly what she wants in life, rather than yearning for what she wants. She creates hibiscus hybrids."

By Duane Choy
Honolulu Advertiser, November 4, 2005