She was bit by her tankmate...

[Eastling352]

And now a bit of her skin on her leg looks scraped or something. It looks red, there's no blood, just looks like a small patch of skin is gone. It's that small bump on her leg.

If you would look at the pictures, if it's optimal to fridge her or something if she is at risk of getting an infection?

 

[AxolotlTwins]

My axolotl had the same injury, just keep the water nice and cool & keep an eye on the injury to make sure a fungus doesnt start growing. Keep feeding her some earthworms & she should heal real soon. But keep a close eye on the wound.