I think you're really getting into the feel for the Moore character now.
After really getting a feel for the character.
So, we're looking for someone who is kinky, possibly trusted by Amanda so she got naked for him/her, and who convinced her to play at hanging, which either went wrong (not my favourite theory) or intended to kill her (either for kink or some other motive). We don't know anything was stolen, so perhaps it's not money. No forced entry so I suspect the killer (if there is one) was known to Amanda. Also, did anyone test the body for possible sexual activity before she was hanged? Everyone is running around going "I think it looks like a suicide, and I don't think the parents did it", but where's the hard evidence? Check the lab and the autopsy guys. These other cops are not being helpful.
Sorry that sounds perhaps needlessly critical. I like this story so far. Keep going.