i think that if you take the kitten to the vet they will probably tell you to do what your doing. keep it clean and put anti-bacterial on it and keep an eye on it. im not saying there isnt a chance of it getting infected but any cat scratch on another cat or human can get infected if it isnt cared for.
We've been getting some responses that because it's in/around the eye, it needs to be treated due to the bacteria from cat claws and the sensitivity of the eye region.
For now we have used some left over ointment that we had for another of our cats that fight against bacterial infection and used on the eye. Also, after passing overnight, it looks exactly the same, so at least there's that.
cats get cuts and scrapes all the time. i say keep it clean and if you can go to your local pet store and see if they have a antibiotic cream for sale use that. if you see it starting to look infected then take her to a vet asap but if it looks fine with keeping it clean then i wouldnt worry about it