I couldn't help but glance at Dexter. When Juliet pretended to be Sophia, I wasn't really worried.
Only someone as gullible as Damien would fall for it... But when even Damien didn't believe Juliet, I realized just how lacking her disguise skills were.
Peter exploited Juliet by using her to impersonate the supposed reincarnation of Sophia to deceive Damien and Dexter. However, Juliet's lack of acting skills and low IQ were ultimately detrimental to the plan.
Given Peter's intelligence, one would assume that he would refrain from making such a foolish error. Surprisingly, he allowed Juliet to proceed with it nevertheless.
Linda also mentioned that Peter was a kind person. He supported Sophia's parents and was the one who looked out for Sophia.