Sister Rosalie Locati accepted a call 22 years ago to encourage caregivers, regularly wandering the hallways and nooks of Providence Sacred Heart Medical Center. This week, she retires after 60 years of service, including early as a teacher and years mentoring Washington State University students. At Sacred Heart, she gained respect for compassion and humor, and Friday, Locati reluctantly agreed to some fuss over her. Staff organized a parade send-off, with her in a convertible.