[SC悬赏令] 求助一道GWD的语法题！

So dogged were Frances Perkins’ investigations of the garment industry, and her lobbying for wage and hour reform was persistent, Alfred E. Smith and Franklin D. Roosevelt recruited Perkins to work within the government, rather than as a social worker.

A. and her lobbying for wage and hour reform was persistent,

B. and lobbying for wage and hour reform was persistent, so that

C. her lobbying for wage and hour reform persistent, that

D. lobbying for wage and hour reform was so persistent,

E. so persistent her lobbying for wage and hour reform, that

这道题her能指代前面的Frances Perkins'吗...我印象中人称代词好像是不能指代前面的所有格形式的？是不是后面的所有格形式就能指代前面的所有格形式，但如果是she的话就不能指代前面的Frances Perkins了？