If you have no disinfectants or other supplies available, I would clean/flush the wounds well with sterile saline, if you have salt and water you can make your own.
If you have city tap water you can use that from the tap, if you have well water you will need to boil it (I usually boil it either way, to be sure).
4 cups of water and 2 tsp of table salt. Boil the water for 10 minutes, let it cool, mix in the salt until its dissolved, pour into a clean jar. If using well water, boil it for 10 minutes, let it cool, then boil again for 10 minutes.
If you don't have any ointments you can use honey on the wounds (manuka is best) or vaseline (make sure it's clean, a new container would be best and don't contaminate it).
Keeping the wound covered with one of those to keep it moist will help with healing. Due to the size of the wounds, I would lean towards the vaseline rather than the honey for those.
Any plain triple antibiotic ointment that you can get at any pharmacy or box store (
walmart) in the first aid section, generic or brand name doesn't matter, not very expensive, that would be best to use. I would not bandage the wounds, I would leave them open to the air, but keep them covered in the ointment, reapply as needed. I would crate her or keep her someplace warm with no loose bedding to get stuck in wounds, so they stay clean. You can use old bath towels and swap them out as needed, or puppy pads if you have them. I use bath towels all the time, can be washed and reused over and over.
Having said all that, the wound on the back looks pretty severe, if you notice any breathing issues at all I would suspect lung damage, and for that I would euthanize rather than let her suffer. Good luck, I hope it's not as bad as it looks in the pictures, and she can recover.
