Board Thread:FAQs/@comment-36823355-20180904194325/@comment-26397825-20180905004830

The majority of peoplewho believe Pyrrha's soul is inside Cinder's body and trying to reach out are generally those who refuse to accept that she's dead and gone. Logically it makes no sense; as you said the Maiden transfer was interrupted and Pyrrha didn't actually become a Maiden. Amber's soul was the one being shifted around and the powers left the machine and went back through Amber to join Cinder.

Personally, I don't think either soul is inside Cinder and reaching out.