Polysporin is good or peroxide in an eye dropper or syringe might be easier to get on her. Getting her to the vet like you are is the best thing. Don't feel bad, you obviously care about her and have her best interests at heart. Good luck and let us know how it goes. Just an extra tidbit of info - You can get polysporin eye/ear in liquid drops which I find is easier to administer than the ointment. I used it on a White's tree frog that had a scratch under its eye and another that had rubbed its nose raw, with excellent results.
Life is uncertain, eat dessert first