"I'm sorry," John said, as Sarah put the bandage into place over her handiwork. "I'm sorry I couldn't... that Sherlock had to be the one to rescue you."
"He didn't, you know." She glanced over to the corner where Sherlock had collapsed into clearly required sleep after delivering an grandiloquent estimation of her medical competence. "I mean, he tried, but you're the one who kept me alive."
"What?" Double vision only made John look more baffled.
"Sherlock went to untie me, but he left me in danger," Sarah said, with a kiss to John's brow. "You moved the danger away."