Cuts on ferret or something else?

Sometimes my ferret and cat play and it occasionally turns into a fight. They were playing yesterday and my ferret was hiding under the bed when I walked in, and today I noticed a cut on her back and a small scab on her belly. It’s not a spot she can reach easily to scratch or bite at, but it looks like a mast cell tumor? It’s not swollen at all and there’s no bump, but I’m scared it’s something more than a cut. Is this something I should clean and watch after for a few days to see if it clears up or is this an emergency vet trip?

Link to pictures: ferret cuts