[He gives a rough laugh and pulls away, pushing his hair away from his face.]

Sorry. I forgot . . . Sirius. He can erase memories. He-- he did it last time. That's what made me blind, that's the spell he was tryin'. He was messin' around with me Edelweiss memories-- he's done it before-- but it backfired that time, and now he probably won't dare do it again.