This was a story in the Ghosts of the Shadow Market collection. It's part of the Shadowhunter universe, focusing on the children of the protagonists in The Infernal Devices series. In this story, Anna lightwood craves to be her full and honest self, and that self is a talented Shadowhunter, funny and mischievous queer girl. It handles the lgbtq story line so deftly in my opinion. There's a full review on my blog meagankimberly.com