My millionaire husband brought home a homeless elderly woman and ordered me to bathe her myself. Disgusted, I wore gloves. Then I spotted a crescent birthmark on her shoulder, dropped the sponge, grabbed a 20-year-old locket, and burst into tears.

“Do not pressure her to remember,” he warned us. “Use photographs, familiar places, sounds, smells, music—anything connected to her old life. Memories may return naturally.”

So that was exactly what I did.

For weeks, I turned our home into a recreation of my childhood.