Shock is her biggest enemy right now - can easily kill her. Try to get a bit of electrolytes in her - in a pinch, can spritz Pedialtye on a treat she likes. As has been said, put her in a quiet warm very comfy place and keep reassuring her that she'll be okay. Soothing continuous reassurance can sometimes help keep them from succumbing to shock. When imbecile people let their dogs run loose and they attacked ny hen Ellie, I thought I was going to lose her - but I cradled her gently in my lap and spoke soothingly to her till she seemed to come out of shock (about 90 minutes). Then I evaluated her injuries. (another thing that helped her was her very sweet roo buddy - put him with her and he comforted her so gently for many hours).
She may well benefit from pain relief. Pain can make her disinclined to eat or drink. If you do not suspect internal bleeding and if she is not otherwise actively bleeding you can give aspirin for pain. A low dose is 1 baby aspirin (81 mg) crushed into one cup of her drinking water, fresh batch at least daily. Sometimes to get a bird that's hurting eating and drinking again, I cut up bits of favorite fruits and dunk them in the aspirin water and then feed them by hand. They get a bit of aspirin this way and it begins to take the edge off the pain, thus inspiring them to eat/drink on their own from there forward. All of this can wait till she's not shocky.
Rescue Remedy has been mentioned. Do give this.
Neosporin applied topically for surface or very shallow injuries. Puncture wounds may well require oral or injectible antibiotic to tackle infection that could well kill otherwise.
All birds in lockdown, as the dog will be back. The dog (i.e., the dog's irresponsible 'guardian'), is another subject, once your girl is stable.
JJ
