Urgent help needed after cat fight!

Urgent help appreciated!!!

Hello. I have three cats and two of the cats today decided to fight like they are at a war zone. One of the cat (Yu) bit my other cat (Yui) so hard that she was bleeding. She has a puncture wound in her stomach and scarring on the back. We applied pressure on both areas, sprayed antiseptic spray, put gauze, and some bandage. She also has a cone now to prevent infection from her saliva. I am not financially equipped at this time to go to the ER and I’m also waiting on visa so I don’t qualify for any of the Care Credits at this time.

I have a wellness plan with my vet, so I don’t have to pay for regular visits and I got an appointment tomorrow. However, I’m worried about my cat and was wondering if any of you have any at-home remedies I could do for now until tomorrow.

Photos of her wounds are here.

Thank you.