From The Heretic Knowledge Vault
Claire is one of the residents of the secretive half-elf sanctuary-town of Snamish, visited by a band of player characters as they wander the boonies of Veracia. She's the second child of Beatrice and Benedict Lucas, a prominent Snamish family, which makes her the sister-in-law of PC Sister Rose -- at least she was until Rose's husband was killed, but Rose still considers herself part of the Lucas family. She enters the stage as Beatrice and Benedict host a dinner party for the player characters, along with her rather nondescript boyfriend Keramid.
We don't know much about her, other than that she looks more "human" than many half elves (other than an oddly-colored streak in her hair) and that Rose considered her a bit flighty in her younger days. She hasn't been seen since the group left Snamish, and presumably she's still there.