In "The Skeleton Key," a Nebula Award Finalist novelette, Tess and her best friend decide to worship Hermes when they are children. When college-age Tess falls in with people who worship someone else, things go wrong, and then sideways. In short story "Bright Streets of Air," best friends and witches Jessamine and Ellowyn share tea and spells, with upsetting results.
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Used availability for Nina Kiriki Hoffman's The Skeleton Key / Bright Streets of Air
August 2015 : USA, Canada, UK Kindle edition