Wow. This is so wonderful, it moves so smoothly from her younger self to her present day and all the scenes in between are so perfect. The scenes are treasured little glimpses into her life and how she views Minerva and her own self (the characterization of Minerva is also gorgeously spot-on). The scene on the train! :D
"Don't be silly," Minerva said primly. "I'm not a young woman anymore."
"And thank God for that," Rolanda said, her voice husky.
/faint
And I love how Albus is up front about what he seeks to have, that diversity at Hogwarts. The conversation between them about teaching is so awesome, so perfectly voiced.
Best of all, I love how this rich look at what it is like to be openly queer at Hogwarts and in the wizarding world. Yet it really is Xiomara's story right to the very end and I absolutely love, love the mention of her being a mentor for other young queer students. Her decision to choose what name she wants is decisive and the way she comes to that point really moved me to tears, as did this:
Looking ahead to the new term, Xiomara is comfortable. The air in Albus's school has a certain ease, subtle enough that most students probably don't notice it — walking through it in the blind way that Muggles walk through magic. But for the children who need it, it's there.