[Were it anyone else, Liam might've been surprised, but knowing Sirius and having become accustomed to wizarding habits, he just stood up to reach for the letter.]

I'm not tired - that's part of the problem. [He extended the letter toward Sirius.] And you're not the only one who's noticed my wasting away. [He accentuated that with a dismissive hand motion, then crouched near Harriet.]

Dumbledore's offered me a job at Hogwarts - not as a teacher, rather as something that could "make better use of my talents and temperament."