thank you everyone for your help, advice, encouragement. i'm hoping for the best and preparing for the worst. i am a realist and pretty practical.
so we picked up more ointment, EMT gel, baby aspirin, pee pads and some saline. i wetted down the gauze to gently remove it, drowned her back with saline and tried to assess some more. i had my husband snap the pic while i held her wings out- she's got damage under her right wing too. she can hold both her wings in the correct position. i sprayed her with veteracyn, then put the neosporin on gauze and then had my husband squirt some more in that really icky spot under/behind her wing.
i tried to find an oral antibiotic because i am NOT comfortable giving shots. i'm just not. we do have a vet here who may be able to help me- he's semi-retired tho, but i've taken one of my chickens to him when a ladder fell on her and she broke her wing. he does do birds...so if she's still alive by tuesday, i'll get her in to him so he can help me with any antibiotics or deep wound care.
oh, and i didn't find any oral antibiotics at
TSC.
@Latestarter, I'm not sure when to use the EMT gel?
anyway, i gave her half an 81mg aspirin and electrolytes via syringe, then put it in her water bowl, and gave her some layer crumble. apparently this was a big deal to her because she ate a little crumble, then started to fall asleep- standing. but we hung out with her talking to her, and my husband played some guitar quietly, and we sang to her, lol. she liked that. eventually she laid down, then after about a half hour or so, she got up and began drinking and eating again. then we gave her some quiet time.
the pic- the top is her neck and the bottom is her tail end. i didn't see anything on the belly- i think all the damage is on the back. and yes, i believe that is bone? this is way beyond my expertise (which is none) alone.