Vote Lucario
If Mop it up is the player making the hit then I can't vote her out to keep the 3 way standoff alive but townies and killer need a mafia member dead for sure to keep the final result fair. Since I have no idea how Lucario would handle a day where he is the last mafia member facing BS and myself as host and the godfather then he must be the one targeted in the vote today to keep the numbers even and see who is still left standing in the morning.
Otherwise, I'd have to vote Mop it up out and I think that would foil her hit unless Lucario allows a person voted out to make a hit. One more thing he can clarify before we end the day.
EDIT: Reading comprehension fail. I thought Lucario said there was 2 Mafia, 2 townie and 1 killer left meaning Lucario was part of the Mafia. Ok. So Silenced is Mafia after all.