She wagged her finger with mock severity.是什么意思？

She wagged her finger with mock severity.

她故作严厉地摆了摆手指.

she

pron. 她，它；

例句
Her lover walked out on her after she had aborted their child.
她的情人在她打掉胎儿后甩了她。

wagged

v. （使）摇动，摇摆( wag的过去式和过去分词 )；

例句
He wagged a disapproving finger...
他摇晃着手指表示不同意。

her

pron. (she的宾格)她，(she的所有格)她的，她，指某个国家，（一艘）船；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

finger

n. 手指，指状物，指针；vt. 伸出，告发，用手指触摸；vi. 用手指触摸，拨弄；

例句
All you need to do is gently agitate the water with a finger or paintbrush...
你只需要用手指或刷子轻轻地搅动水。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

mock

vt.& vi. 愚弄，嘲弄；vt. 使受挫折，不尊重，蔑视；adj. 仿制的，模拟的，虚假的，不诚实的；n. （英国）模拟考试；

例句
...shrieking and caterwauling in mock distress.
故作悲伤地尖叫

severity

n. 严重，严格，严谨，严厉的对待；

例句
Like most cases of extreme weather, its severity was due to an unusual confluence of events.
如同大多数极端天气状况一样，其剧烈程度是由于几种气象条件反常地汇集在一起造成的。