Better to leave her in the house and know she'll be there when you get back.
Dog-proof as much as possible; lay some pee-pee papers down for her, maybe get her a Kong with treats inside, leave the radio on.

As for her trying to rush the door,well, you know you gotta be the alpha dog in the pack.

Maybe a pet-sitting service that can pop in, take her for a quick walk and a scratch behind the ears?