Our 2 yr old aussie shep mix all of a sudden is scared to leave the house. We suspect that perhaps she was shocked by the invisible fence after not having her collar on for a while. Not even bones, walks or anything can bribe her! Any ideas?

I don't mean to sound rude, but what did you expect would happen with that collar? The things should be outlawed.

You need to get rid of the collar, and find a high value treat for her. Use the treat to just get her to the door and then through the door. Add a step at a time. Not only give her the treat, but lots of praise with each new step she takes.