Your risk of infecting her is low but not zero. The duration of your infection speaks to the lower risk of transmission as well as the lack of recurrences. However, taking daily antiviral medication like valacyclovir 500 ng once a day will also decrease the chances of transmitting to her. using condoms reduces transmission by 96% from men to women as well. I would advise that you provide her something to read about herpes so she can give it some good thought and you can have an intelligent discussion with her. I hope that your relationship has been established with some emotional connection so she can see that HSV is only one small aspect of who you are.