You should be using saline for regular cleaning after. Soap and water works, but it’s more likely to cause irritation in open wounds and won’t encourage healing. You could also apply Manuka honey around the sides of the wound and give her some to encourage internal health since you mentioned blood in her poop. It’s not a cure all, but if she’s battling infection due to the wound it will. I’ve used on my dogs in the past with great success.