I'm so very sorry to hear about your losses, this is indeed heartbreaking
Photos of your injured hen may be helpful, if that is something you'd like to share.
Cleaning her wounds like you have an applying triple antibiotic ointment was very good. If you feel like the wounds need to be re-flushed or cleaned, you can use saline, diluted betadine, chlorhexadine or soap/water.
Tractor Supply does not have oral antibiotics, but they do have injectable Penicillin in the refrigerated section. Look for Procaine penicillin G. TSC carries needles and syringes as well, get a pack of 20gauge needle and some syringes. Dosage for Penicillin is 1/4cc daily injected into the breast muscle 1/4" deep for 4days. Alternate sides each day.
If she is very lethargic, do the best you can to keep her warm. Place her in a box or kennel in a quiet area. Try to get her hydrated - you can give plain water, sugar water, electrolytes, vitamin water, gatorade, whatever you can get into her. After she is drinking then see if she will eat. A little chopped egg is sometimes well received. If she won't eat right now, but will drink, that will be o.k. for a day or so.
Again, so so sorry I can't imagine. Please keep us posted.

Photos of your injured hen may be helpful, if that is something you'd like to share.
Cleaning her wounds like you have an applying triple antibiotic ointment was very good. If you feel like the wounds need to be re-flushed or cleaned, you can use saline, diluted betadine, chlorhexadine or soap/water.
Tractor Supply does not have oral antibiotics, but they do have injectable Penicillin in the refrigerated section. Look for Procaine penicillin G. TSC carries needles and syringes as well, get a pack of 20gauge needle and some syringes. Dosage for Penicillin is 1/4cc daily injected into the breast muscle 1/4" deep for 4days. Alternate sides each day.
If she is very lethargic, do the best you can to keep her warm. Place her in a box or kennel in a quiet area. Try to get her hydrated - you can give plain water, sugar water, electrolytes, vitamin water, gatorade, whatever you can get into her. After she is drinking then see if she will eat. A little chopped egg is sometimes well received. If she won't eat right now, but will drink, that will be o.k. for a day or so.
Again, so so sorry I can't imagine. Please keep us posted.