At this point you both need proper testing for herpes. I recommend that you both get a type specific herpes igg blood test done to see who has what.
If she tests + for herpes and you test negative for the same type, odds are that she had herpes before meeting you and never knew it and this was just her first obvious recurrence of the virus.
www.westoverheights.com has the free herpes handbook. both of you reading it would be really helpful too :)
grace
My love and blessings to you in this.
It is possible, but rare, to have the first ob a while after transmission, even 16 months. While oral and genital herpes are the same virus they are separate. She can transmit from the infected area (genitals) to a new area (mouth). But if she does not have it orally she cannot transmit from her mouth to another area, like your mouth or genitals, so kissing would be fine and her performing oral sex would be fine. Hope this helps.