I would enroll her into obedience class.
In the meantime do not allow her to jump the fence by chaining her up.
Also if you do not crate her maybe keep a lead on her in the house, especially if you know people are visiting. When you hear a knock or the door bell etc.. grab the leash.

Also when you let her out to potty or excesize make her sit & stay by the door (have a lead on her) once she is settled in the sit (or you can use a down command) you may open the door, if she gets up quicky shut the door, and make her sit & stay again.
She will quickly learn that she can not go outdoors unless she is sitting.

Does she have a good re-call?