The Shade Isle Campaign
A strange creature that dwells in Castle Melènkâr, the Lark, whatever she really is, takes the form of a common songbird. But she speaks with a woman’s voice, has the ability to fly through solid walls, and seems to be intent on observing and somehow testing the members of the adventuring company.
After the adventurers slew Rydel Melènkâr, the Lark appeared and bemoaned the death of “her darling son”, but then admitted that he was more wicked than most of his brothers and sisters. This implies that whatever the Lark really is, she is the matriarch of the Melènkâr family.