I would remove the second half and just do the "reflect night actions on source" also could make it so Mime has a list of "actions" during the day they can do at any time, such as:
*Mime: Yes* = System message to all players that the Mime nods his head.
*Mime: no* = System message to all players that the Mime shakes his head.
*Mime: Point* = System message to all players that the Mime points to their vote.
*Mime: Yes* = System message to all players that the Mime nods his head.
*Mime: no* = System message to all players that the Mime shakes his head.
*Mime: Point* = System message to all players that the Mime points to their vote.