Should The Minister of Police Resign?

Now that an investigation by the Police must be underway (in response to receiving a complaint), how is it possible for Annette King to remain Minister of Police given that her husband's role is so central to the Baygate scandal? If she stays on as Minister and the Police reject the complaint, or say there is no case to answer, will this not smell really bad? Would it not be prudent political management for Labour to find a new Minister on Monday? Why not David Cunliffe? He seems to be in charge of things.......