Beautiful Spayed female German Shepherd (Crossville)

Beautiful Spayed female German Shepherd.
she is a wonderful dog, totally housebroken, excellent with kids and other animals.
only reason for rehoming her is because she keeps going under my neighbor's fence into his cow pasture.
Please note, she is NOT an outside dog.
she will bark all night and day if tied up to a tree or in a kennel.
She wants to be with her pack.
She travels very well and is very socialized.
She would be ideal for someone that has time to pet her and love on her all the time, a senior or a younger child.
she is approximately 5 years old.
only two things that I see wrong with her is she is terrified of thunder/gunshots and when she first meets a dog, she carries on, barking and hiding.
I think she may have been attacked before I got her.
she has never hurt human or animals, well, except rats, she loves to chase and catch them.
small rehoming fee applies