Yes, Dolly only does this behavior at night.
I moved into the house last week and it has occurred since.
I have not noticed any other unusual behaviors, still eats and drinks well also.
She will bark inside the house too, which is why I thought the dog door would help. If she had a chance to go outside on her own and investigate, she would see there wasn't any problem and come back in. But now she is barking for extensive bits of time outside. She also barks inside, but not as much with the dog door. Now it is mostly outside.