The white scars doesn't look like old rodent bites. It definitely looks like the snake scraped its back crawling under something. Like trying to escap an enclosure or something. I rescued a super pastel ball who had an identical scar because he snuck out of his tank and the screen top caught his back.
You can find betadine at any drug store. Its practically diluted iodine. When using betadine, you can dilute it until it's tea colored and give that girl a nice soak. That should help sanitize all her wounds. You can also just swab it on if you don't want to bathe her.
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