From The Heretic Knowledge Vault
Beatrice Lucas is a resident of the half-elf sanctuary town of Snamish. She herself is a half elf, and is married to Benedict Lucas, chairman of the town council and all-around very distinguished fellow. This couple has some importance in the game as well as in the town, because their son Kenny was married to PC Sister Rose until his unfortunate death a few years back in a military accident. The Lucases have remained close to Rose in the years since then, and when various events bring Rose and fellow adventurers (Argus, Lillith, etc.) to town, they welcome their (former?) daughter-in-law and friends into their home with open arms.
We don't really see much of Beatrice during the escapades in Snamish, other than as gracious hostess, so we don't know much about her other roles, capabilities, etc. However, if the action ever returns to Snamish, she'll still be there.