A very believable take. I love the atmosphere of the library - just what a Black library would be.

because he’s the only one of them worth loving and he’s just as ill-fitting as she is. Yes, that would bring those two together. Both misfits in the Black family, whose very blackness pervades this story.

She loves Sirius, she really does, but she loves the idea of not being a Black even more, and she lets Ted take her to Hogsmeade. Great line.