If you wanna save her at this point you need to get a bit drastic....I would recommend watering her with some nutes that have a high N and add some h2o2 to your water. also...flush the shit out of her before you give her the water with nutes and peroxide....this will get fresh oxygen to the roots and should keep her alive until you can get the soil to dry out....but after you do that you need to let it dry out!

good luck bro