It's been confirmed Molly will appear in this episode. I forgot where but I saw a theory that Molly will steal the boat and that she lied about her past. I looked into this and on this video,
If you skip to 1:17:31, you'll see a shattered picture frame. Remember when Molly was looking around the house when you got back there with Vernon? I think she took the picture of her "sister" from the house. I don't know why she would pretend having a sister and she did mention her sister in the videotape. It's not like she could've known Lee would've seen the videotape and confronted her about it so the theory still has a lot of holes in it but I think there's definitely something more going on here. What do you think?