I've read that no cases of Hepatitis C have been transmitted from oral sex. Would the same be for kissing?
In the case of HIV, Saliva has a dozen protein and enzymes that inhibit HIV transmission.... would the same be for hepatitis c.
The only chance would be if you got really carried away and bumped each other hard enough to split your lip and hers at the same time. Her blood has to get inside of your blood stream, not just on your skin.