Sentence Correction (SC) | Re: Although she was considered among her contemporaries to be the better

Hi @dhagg,
Option D, AlthoughElizabeth Barrett Browning’s success was later overshadowed by that ofher husband, among her contemporariesshe was considered the better poet.
How isher referingElizabeth here? the subject is EBB's success not EBB. Will you describe the rule regarding this?
Thanks in advance.