Dark Fall 3: What, in the end, happened? (open spoilers)

So I just finished playing Dark Falls 3: Lost Souls and as much as I enjoyed the game, I really am lost when it comes to the plot.

The basics are pretty obvious: A young girl, Amy, seems mean and obsessed with death. She meets and befriends Mr. Bones. Amy then goes missing, and Mr. Bones is fingered for the crime.

By the end, you find out that you, as the detective, you became obsessed with the case, killed Mr. Bones, and died (AFAIK… there is a life leech in the sink which I assume was the detective’s). It left me with lots of questions… like what happened to Amy? Is she dead or alive? If dead, what killed her? If alive, where is she? What’s with Mr. Bones? Is he crazy? Why is Amy so obsessed with death? Did she kill and bury a baby sister(s)? Was it all a dream? When the story ended, it felt incomplete. Anyone know?