Molly pulled out a notebook and opened it. All of the writing was hers, not Melony's. And the name written on the notebook was Molly Tyne. That was Melony's last name. So it was true. They really had switched places.
But how come she was the only one who noticed? From what she saw, Melony actually believed that she was the daughter of the Stevens. At least, that's how it appeared. When Molly was interacting with other people, she discovered that it was like she was on autopilot, acting and talking just like Melony would. Maybe the same thing was happening to Melony.