Mrs. Poole

Mrs. Poole: The bane of Diana's fun and horseplay. Mrs. Poole is the only servant who stuck around after hard times fell on House Jekyll. Mary couldn't afford to pay the entire staff any longer after her mother died, so the servantry all left. But Mrs. Poole stuck around, and keeps the girls in line. Strict but loving to the utmost she cares for the house while the girls are away. May have a thing for Watson…

For most of the entire series, when the girls need to rest, recoup, gather their wits, Mrs. Poole is ready to give the support and nurturing that's needed.