I agree with others:
1. Uncle is Baby Daddy. Bottle is for DNA testing. Agree with others who said that. He gave her necklace. But not the Uncle that everyone thinks who had her stay in her basement. He's nervous because he knows the truth with what his brother did when she stayed there.
2. Trying to figure out what fake Baby Daddy, best friend, and the other guy were doing? Just taking the money? Why burn the diaries? Seems like something in there might implicate them somehow in Erin's murder. Obviously fake Baby Daddy was not at his house that morning. Don't understand the burn the diaries motive if they aren't involved in the murder - but the preview practically made him out to be the killer so he's probably not the killer.
3. Another question - why was Erin scheduling the surgery and cancelling? Was someone stealing her whore money from her? She had the secret envelope which means she was whoring for the money.
4. I agree with others that the old lady hitting a tree and the pervy neighbor storyline seems like too much for a throwaway joke about the affair with the Mom.
5. I like the fiancee sleeping with Mare's best friend's husband angle.
6. Agree that the beard comment may mean he had a partner, but I think he had to have shaved. Ex-Husband and both of Erin's uncles have beards. Restaurant owner father has a thin-ass beard as well.
So many suspects, but agree that Erin's killing was not related to the others.