User blog comment:DeltaHorizon020/Third Effortpost of A Complete Monster Candidate/@comment-2175012-20170523162119/@comment-27960787-20170523164234

I think so yeah. If you see this video, You will know about Mary's story:

https://www.youtube.com/watch?v=Y9u47k-99es&t=6s

And P.S. Keyword of Mary isn't Alice is in this quotes:

The thing that Mary said in her diary: "I met a strange girl who was about a same age as me. She knew everything on Mom's condition but why?" and I don't think it's Mary at all even if the picture tricked the viewers and Akemi to think that this is possibly Alice (I think the real Mary got her soul sucked by Alice and then she got replaced. But that's my theory) and I don't think the story holds up