Kittens inner eyelid covering

Hi first time user hope you can help.
My kitten, Skittles' inner eyelid is covering half her eye. We think she might have hurt it playing with our other cat. It isn't watering but she is keeping her eye half closed too. Should I wait a little bit or get her checked, it just happened last night.
Thanks

Hmm..if her eye is not better by tomorrow, I would take her to the vet. She may have gotten her eyeball scratched by the other kitten, and could need drops to ward off infection.

Sounds like Horner's Syndrome:

http://www.peteducation.com/article.cfm?cls=1&cat=1344&articleid=2477

You should take her to the vet for eye drops.
(It isn't expensive)