If you don't have vet care available - it would be best to flush the wounds with saline since it sounds like most of her injuries are at her head and eyes. Saline can be used to flush eyes. Apply Vetericyn or triple antibiotic ointment to the wounds.
Place her in a warm, quiet place and offer her some water. If you have poultry vitamins or electrolytes (you can use watered down Gatorade or Pedialyte) add those to her water. Make food available. Hydration is most important.
Now, how many other hens do you have with the 6roosters? You may want to go out and separate the hens from the roosters or house the roosters separately. It sounds like you have a bunch of cockerels that have reached sexual maturity - they can and will fight over hens, possibly injuring more. They more than likely will start fighting with each other as well.
Try making a mash with food and water. Heat it a little in the microwave. Clean her eyes and face with saline like suggested. Clean the body wounds with iodine or vetercyn spray. Keep her separated from the flock until she is 100% healed. If not, the others will peck her wounds back open. Be mindful of infection and if needed use antibiotics if you are inclined. I had a hen with a severe wound that I thought I would have to put down - she lived separate for 2 months but eventually completely healed. Best of luck to you and your girl!
Regular crumble or pellet feed will mash well with water. I wouldn't use antibiotics unless you see signs of infection. Chickens can be very resilient so hopefully that won't be necessary. If she is really dirty, I would put her in the sink first and gently wash her wounds with water to remove any debris. Then use clean with iodine or another antiseptic. Use the vetercyin spray at least twice a day after. It really works wonders and I always make sure I have plenty on hand in case of emergency.