16 Peter Ilya messaged me as soon as Sara left the house, and I told him to follow her. Not because I was worried we’d lose her—Yan added tracking chips to all the shoes he got for her—but because I didn’t want her hiking alone. My little doctor is used to suburban environments, not mountain forests, and I didn’t want to risk her getting hurt. I was already on the way back, so as soon as Anton dropped me off, I followed the GPS signal from Sara’s boots. It took me only an hour to catch up to Ilya, and then I took over the job of tracking Sara—my favorite pastime in recent months. “How did you find me?” she asks, recovering from the shock of seeing me. Her voice is strained and a touch breathless, but she holds her chin high, facing me without flinching. “How long were you following me?”