I would just give her more time to adjust. I'd recommend leaving her inside 100% if you can. If she's just dying to get outside, I'd still wait a couple weeks at least before letting her out so she can establish that as her home.

I work at a shelter and very often we adopt out cats who go home and won't eat or potty for the first few days because they are still adjusting. They do come around though. Most cats are really frightened in new surroundings and its just a matter of becoming familiar with the territory. I'd leave her in your room only until she's really comfortable, then let her out into the rest of the house.

Good luck!!!!!!