Mexican food was what she wanted, so we sit in a café where mariachi music plays and the walls are adorned with gaudy paintings of dancing señoritas. Though the girl’s features are Chinese, she is clearly American, from her cropped hair to her tattered jeans. A crude and feral creature who slurps up the last of her Coke before noisily gnawing on the ice cubes.

I begin to doubt the wisdom of this venture. She is already too old to be taught, too wild to learn discipline. I should release her back to the streets, if that’s where she wants to go, and find another way. But then I notice the scars on her knuckles and remember how close she came to single-handedly taking down the two men. She has raw talent and is fearless-two things that cannot be taught.

“Do you remember me?” I ask.

The girl sets down her glass and frowns. For an instant I think I see a flash of recognition, but then it’s gone. She shakes her head.

“It was a long time ago,” I say. “Twelve years.” An eternity for a girl so young. “You were small.”

She shrugs. “No wonder I don’t remember you.” She reaches in her jacket, pulls out a cigarette, and starts to light it.

“You’re polluting your body.”

“It’s my body,” she retorts.

“Not if you wish to train.” I reach across the table and snatch the cigarette from her lips. “If you want to learn, your attitude must change. You must show respect.”

She snorts. “You sound like my mother.”

“I knew your mother. In Boston.”

“Well, she’s dead.”

“I know. She wrote me last month. She told me she was ill and had very little time left. That’s why I’m here.”

I’m surprised to see tears glisten in the girl’s eyes and she quickly turns away, as though ashamed to reveal weakness. But in that vulnerable instant, before she hides her eyes, she brings to mind my own daughter, who was younger than this girl when I lost her. My eyes sting with tears, but I don’t try to hide them. Sorrow has made me who I am. It has been the refining fire that has honed my resolve and sharpened my purpose.