她嘴巴僵直, 无法细说下去.用英语怎么说？

她嘴巴僵直, 无法细说下去.

Her mouth stiffening, she could not elaborate.

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。

mouth

n. 口，出入口，传闻；vt. 装腔作势地说，喃喃地说，心不在焉地说，言不由衷地说；vi. 装腔作势说话；

例句
She stood looking at Carmen with her mouth agape.
她站着，张大了嘴看着卡门。

stiffening

n. （使衣服等）变硬的材料；v. （使）变硬，（使）强硬( stiffen的现在分词 )；

例句
The replicas are made by using a thin film of fusible alloy on a stiffening platen.
复制是用附着在加强托板上的可熔合金薄膜实现的.

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。

could

aux. “can”的过去式，能够，打算，用于假设语气的条件句，用于虚拟语气的结论句；

例句
The regulations were relaxed and the prisoners could get out and about a bit.
规定有所放宽，犯人可以出去短暂放风。

not

adv. 不，[用以表示否定、否认、拒绝、禁止等]不是，几乎不，未必，没有[用于否定后面的词或短语]；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

elaborate

vi. 详尽说明，变得复杂；vt. 详细制定，详尽阐述，[生理学]加工，尽心竭力地做；

例句
His new play, Arcadia, is as intricate, elaborate and allusive as anything he has yet written.
他的新剧《阿卡迪亚》和他写过的任何作品一样，错综复杂、构思精巧并且富含典故。