If you have it written down and it's signed, you didn't do anything wrong.
Of course the situation could have been handled differently...he!!, DCM could have accommodated your request to close early. As I see it, tough times call for tough measures. It's not your responsibility to track down an emergency contact just because DCM couldn't manage to be on time.
Be prepared for a visit from licensing. That's about the only reprocussion she has against you for your actions. You, however, have the ball in your corner. Take her to small claims court for failure to provide your required notice!
