How old is the main character? They speak very well for a child, though there are very smart, well-spoken children out there. But if this game is aimed at average children, they might find some phrases confusing.
I was concerned about the direction this was heading at first, so I'm glad there was a less sinister explanation. I won't comment about specific things, in case it spoils the surprise for other players. I'm curious about where else you're going with this game, though. On Reddit you said it was a prototype?
I think there needed to be more hints about the big reveal, though, because I wasn't expecting it. I was, as I said, expecting a more sinister explanation, since the clues were pointed that way.
The mini-games were good. Do you intend to have more of them in the finished version?