Sarah and Yvonne looked up simultaneously. A gentle-faced woman, leaning on a cane, stood before them. She appeared to be around forty, well-maintained, yet her eyes held an undeniable weariness. Her complexion was pale, and the hair at her temples was thin. She wore a light apricot-colored house dress, giving her an exceptionally approachable air. Sarah paused, her eyes narrowing slightly. This woman was likely Mr. Johnson's wife. Yvonne was the first to react, quickly walking towards the woman and taking her arm in a solicitous, almost childlike manner. "Professor, didn't the doctor tell you to stay in bed? Why are you up?" Ruby Johnson shook her head slowly, a hint of helplessness in her voice. "I've been lying in bed all day; these old bones of mine are about to fall apart. It's

