Yeah, but she's putting up a good front.

是啊 可她总是装成很开心的样子。

But she puts up a good front, and, um, when she's hurt and she wants to shut you out, you could die of frostbite.

但她伪装得很好，当她受伤了她会把自己封闭起来，让周围的人都觉得很心寒。