Eldritch Manor: The Eldritch Manor Series

Twelve-year-old Willa Fuller is convinced that the old folks in the shabby boarding house down the street are prisoners of their sinister landlady, Miss Trang. Only when Willa is hired on as housekeeper does she discover the truth, which is far more fascinating.
Eldritch Manor is a retirement home for some very strange beings indeed. All have stories to tell — and petty grievances with one another and the world at large.
Storm clouds are on the horizon, however, and when Miss Trang departs on urgent business, Willa is left to babysit the cantankerous bunch. Can she keep the oldsters in line, stitch up unraveling time, and repel an all-out attack from the forces of darkness ... all while keeping the nosy neighbours out of their business and uncovering a startling secret about her own past?