Now, let's get down to business.
There's one thing I didn't pay attention to before.
First night. Dave isolates Fragment. Fragment, as we already know, is a ghost. Dave's next move will be described, but it won't be successful.
Second night. Dave isolates Sky. Sky doesn't say anything about suspecting Fragment. This means that either he makes his move before Dave isolates him, or he decided to hide the fact that, despite the isolation, his night action was successful. Since, before the isolation, only negative roles + Eddie make their moves (and Sky doesn't fit the role of Eddie), Sky is either a Mafia member who didn't reveal his teammate, or a ghost girl who is basically aiming to win with the Mafia, or a serial killer.
For starters, **execute Sky**.
Плачущее небо под ногами