The hours that followed were filled with a quiet sense of relief. Riele and Harry sat by their mother’s side, taking turns talking to her, letting her know they were there and that they wouldn’t leave. Riele couldn’t help but notice the subtle improvements—her mother’s eyes followed their movements, and though her speech was still soft and fragmented, it felt like a sign of progress.

As the evening wore on, Riele felt an overwhelming sense of gratitude. She looked over at Harry, who ...