Poor little car. Left with its engine idling - the very worst thing you can do to a cold car - and the A/C on. The A/C can't do anything until the engine has some heat in it, all that is happening is that an additional radiator is being added to slow the warm-up.
You should scrape the ice off - not too hard on a tiny car - and drive with the windows open and all the heating turned off until the engine has begun to warm. This will stop the car misting inside. It requires putting on a warm coat to drive. It also means being sensible, not being lazy, planning ahead a little for the handful of days ijn the year when this is necessary, and caring about the car.