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

Hi @dhagg,
Option D, Although Elizabeth Barrett Browning’s success was later overshadowed by that of her husband, among her contemporaries she was considered the better poet.
How is her refering Elizabeth here? the subject is EBB's success not EBB. Will you describe the rule regarding this?
Thanks in advance.

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