what are you panicing for ? sounds like she just had a bad night and was overly excited . have you had her out since and she did it again ?? till she starts to open every time out i would not panic just take her back out and after a few trips she still does it then worry if you don't like open dogs
what breed of dog is she ? put up a picture . if she stays open we might work somethin out . i'll use her to get the hogs that come up to my back fence WHILE THE DOGS ARE GOING NUTS BARKING .!!!!