Slap together some kind of plow analog that you can bolt to her rear bumper or whatever so she can back out _through_ the snow, scraping it aside as she goes. Then run out to the car, take off the plow-thing, and shovel the rest at leisure. ;-)
Have you discovered the bent shovel? I had an opportunity to use one of those in Minnesota a few decades ago, and it almost made shoveling fun!
Cheers! Rich