[3] Horn's reflections on her experience at Residential School have been published in The Toronto Star, University Affairs, and in other popular press.

[clarification needed] In 2009, Shirley and her sister Jackie Fletcher founded the Echoes of the World Drum Festival in Sault Ste Marie, Ontario.

[10] Playwright Falen Johnson is currently working on a play chronicling the life of Horn in context of the history of Residential Schools in Canada.

[4][12] In 2016, Horn worked with Donna Hilsinger and Malgorzata Nowacka-May, Artistic Director of The Chimera Project,[13] to create "Bears Stars and Trees" an interpretive dance art piece reflecting on the seven grandfather teachings.

[14] Horn was the 2022 recipient of the Thomas Symons Award for Commitment to Conservation, presented by the Ontario Heritage Trust.