It shows that she's a responsible and caring person and kudos to you, too, for wanting more information.
Now, a couple of questions... Where does she have it and which type is it? Most of the adult population has oral type 1 herpes, AKA cold sores, even though a majority don't know it as they don't have obvious symptoms.
If she has genital herpes, it can be of either type 1 or 2, but in any event, if that's the case, kissing isn't a risk nor is her performing oral sex on you. You performing oral sex on her is low risk if she has type 2 and having unprotected sex with her assuming she is not symptomatic at the time has a 96% chance over a year's time that it won't be transmitted. If she's using antiviral meds like valtrex suppressively, the risk of transmission is cut about in half and the use of condoms cuts it by half again.
I'd like to recommend some reading, the free herpes handbook from the Westover Heights Clinic http://www.westoverheights.com/genital_herpes/handbook.html
Please let us know how we can help further.
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