A native of Seattle, WA and daughter of an Auctioneer, Dehanna was surrounded by the art glass of her father's Tiffany collection and Antique store.  This early exposure to the Art Noveau movement has had a lasting influence on her work. While studying for a BFA in ceramics and a BA in art at the U of W, Native American artist Marvin Oliver asked her to research glass casting for an upcoming project of his. She was immediately taken by the molte n material and decided to branch out and study blown glass at Pratt Fine Arts Center in Seattle, WA.

She joined the staff of Pratt as a hot shop coordinator and studio technician and began teaching cast and blown glass. In 1996 & 2001 she assisted artists Paul Marioni and Ann Troutner at the Pilchuck School of Glass in Stanwood, WA and was nominated for the Saxe scholarship. Blown glass is the focus of her designs, but she has kept her hands in cast glass by working with many architects, designers, and artists as a consultant and fabricator of