Come back, come back to me.

“How did you know I had Shadowhunter blood? Was there some way you could tell?”
“It seemed the most likely explanation.”
“You guessed? You must have been pretty sure, considering you could have killed me.”
“I was ninety percent sure.”
“I see,” Clary said. Her hand cracked across his face, a slap that rocked him back on his heels.
He put his hand to his cheek, more in surprise than pain. “What the hell was that for?”
“The other ten percent,” she said