I'm writing a piece in which a man tells a girl who he has just rescued from the rubble of a house to follow him. Right now, I just have him saying, “Come,” but I wonder if there's something idiomatic that I can render as English (or even a mix of Japanese and English, like the Japanglish “Smith-san.”
Edited to make this not a translation request: I'm thinking he might address her as 妹ちゃん (which I would render as sister-chan or little sister) perhaps? Or is there a stand-alone form for ちゃん that he would use?