影视英语口语:不是软柿子

“不是软柿子”在英语口语里能怎么说？

普通口语：coward
地道口语：tough cookie

素材来源：《Once》听歌>>
剧情简介：街头的卖唱艺人，和闹市的卖花女子，各自有着小烦恼小理想，音乐让他们走到一起，于是他们决定把自己的歌录成唱片，第一步自然是去租一个录音棚……

【台词片段】
Sutdio Owner: Okay, but, uh, listen, I can fill this place in an hour.
Girl: One and a half then, that's my limit.
Sutdio Owner: We can talk about two.
Girl: We don't talk. We shake. We shake on two, yeah? Shake now?
Sutdio Owner: All right.
Girl: Two thousand.
Sutdio Owner: She drives a hard bargain.
Guy: She's a tough cookie.