“She’s breathing,” we all heard her say.

“She’s unconscious,” Mr. C said in a panicked voice. I saw the flyaway ends of the hair he combed over his freckled scalp trembling as he crab-walked away from Milla’s body like she was on fire, and I realized he had no idea what to do, despite all the years he’d taught us basic CPR.

“I’m going to go call.” Ms. Turnbull scrambled to her feet and sprinted toward the gym teachers’ office.

In the seconds it took for me to break away from the crowd of kids and rush to Milla, there was not a single sound in the gym. No one spoke, or coughed, or called my name. No one tried to stop me. But when I picked up Milla’s cool, limp hand with its ragged fingernails and rough calluses, I stopped hearing anything else anyway.

At least, I heard nothing in the gym. Inside my head a strange whispered chorus started up, a murmured chant that made no sense.

A second later, my vision went. I don’t think I closed my eyes, but everything else disappeared and it was as though I was looking into time going forward and backward at once, like I’d jumped off a cliff and hovered somewhere in black empty space.

“Milla,” I whispered. I felt my lips move, so I was pretty sure I’d actually spoken, and then I had that same blood-rushing feeling again, like every bit of energy inside me was being pushed to my fingertips, where it dissipated into Milla’s body.

I let go of her hand and my fingers moved over her neck and face until they found her scalp, which was hot and damp, the hair plastered across a long bump that swelled under my touch. The rushing sensation intensified, and my own heart seemed to slow and falter, and I started to sway, but somehow I couldn’t let go, couldn’t stop touching Milla’s injured body. Just when I felt like I had exhausted the last of my will, something shoved me hard and I fell onto my shoulder. My vision and hearing returned instantly.

“What the hell do you think you’re doing?” Ms. Turnbull screamed, her face purple and her hand raised high as though she was about to hit me. Maybe she would have, except that Milla, lying at her feet, rolled over and threw up.