Comments of chapter undefined of The Maid’s Daughter

I have a theory/theories (to who killed Chloe and poisoned Lil). So stating the obvious facts, it could be someone Emma knows (Courtney), it could be someone who despised Emma's father (forgot the name), or it could be a gang. I think it's a gang of some sort. I think it's a group of people that either didn't like Emma's father or suspects Emma of being Madison in her past life. I might be making this up, but I think there was a time where someone was surprised to see someone else at some time, but that person didn't get revealed. As I said, I might be remembering this from a different story. (Off topic, but...) The guy who was paired with Courtney as a dance partner might come up later in the story. (Back to my really weird theory). I think someone is trying to wipe out the family and the death of Emma's father might have been murder. Anyway, that's what I though of at one point in time.