Her p----- look suggested that she was completely confused.

puzzled~迷惑的~她迷惑的表情表明她完全困惑了~
楼上pale 是惨白的脸色...说不通~
a puzzled look 迷惑的表情, a worried look 焦虑的表情, a surprised look 惊讶的表情, a determined look 坚定的表情 etc 这个结构用来表示发出这个表情者自己的心理状态.
比较: a questioning look 狐疑的表情, a warning look警告的表情, a disapproving look 不赞成的表情etc