So moved was she that she could not say a word.是部分倒装?

So moved was she that she could not say a word.是部分倒装?
参考书上说在so...that句型中,so位于句首时,要部分倒装.
例句是So moved was she that she could not say a word.
这句话为什么不算是完全倒装呢?这不是符合完全倒装的定义么,整个谓语位于主语前面.
我的问题是我觉得So moved was she就是完全倒装。that后面的用陈述语序好像跟我的问题没啥关系吧？
不过参考书对部分倒装的定义是“如果只把助动词、系动词、情态动词置于主语之前，这种形式称为部分倒装”。如果so分句完全倒装，that分句正常语序，也算是部分倒装的话，那跟这个定义是否矛盾了呢？
再看这个例句：
So much does he worry about his financial position that he can't sleep at night.
这句说它是部分倒装我觉得就很好理解了呀。只是把助动词does提到了主语he前面。worry还是在主语后面。