This is wonderful! (and also something of a co-incidence *looks at half-written draft of DD story shiftily*). I adore the uppity tone of the mirror-voice, and It's historical/long-lived view of the various Hogwarts denizens. There were many giggle-worthy moments, but my favourite line surely was:
Socks, the Mirror's gilded arse.
Brava!
PurpleFluffyCat x