Cinder by Marissa Meyer

“You yourself said there will be horrible consequences if she doesn’t get what she wants. I am not worth starting a war over.”
His eyes brightened behind the spectacles. He looked young for a moment, almost giddy. “Actually, you are.”
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“You know, lots of female cyborgs are left infertile because of the invasive procedures, but from the looks of it, I don’t suspect you will have any problems.”
Cinder sat on one of the exam tables, chin settled atop both palms. “Lucky me.”
The doctor wagged a finger at her. “You should be grateful your surgeons took such care.”
“I’m sure I’ll feel much more grateful when I find a guy who thinks complex wiring in a girl is a turn-on.”