When she is running in circles around you, taunting you do you react? Maybe she is trying to get you to react, have you tried walking away like you are going to do something without her?
Always keep your leash with you no matter what your plans are. I have a beagle and they are the most pigheaded dogs. I have walked my dog around his perimeter when he was younger. I thought if i showed him his line that would help, well it hasn't. I try to get him excited about doing something i want him to do.
All i can say is what others have is your dog is young and full of energy, you have to be consistent with the good girl bad girl bit. You need to get her to spend her energy maybe earlier than the last time you take her out.
I have a cousin who trains dogs for shows, she always says to get a dog to do a command 3x in a row. She uses a clicker to get dogs attention, and gives home made liver treats when they do good.
It does get better as they age, just have fun and enjoy her.