Carmilla beamed, but tried not to look too smug or arrogant. After all, the trickster siblings were all known to be rather capricious, and she didn't want to give Lock a reason to change his mind. She was pretty sure she could take Shock if she decided to start a fight though. And anyway, vampires were above that sort of thing.

Lilith accepted the sheet music with a raised eyebrow. The overlapping wordless vocals, combined with a focus on the theremin, made for an eerie, enchanting effect; the periodic rising of the drums and xylophone with only light background screeching added an increasingly ominous air. She wasn't overly romantic herself, but she appreciated the gesture. 

She also wasn't naive; it wasn't unlikely that Lock had prepared this a while ago and kept it ready for a time he was most interested in frustrating his sister.