I understand your concern for this, but you are worrying too much.
First, the chances of you getting hsv2 from her from a one time protected encounter are about 1 in 10,000. (Does she know if she has genital hsv2 or genital hsv1? If it's ghsv1, it's probably lower.)
Your hand never transmits an STD. It just doesn't happen. There's too much movement, exposure to air, etc.
If you were in a relationship with her, assuming she has ghsv2, these are transmission stats:
Ghsv2 transmission, female to male, over the course of a year, assuming sex 2-3 times a week (I use "female" and "male" for brevity, but I mean nothing more than the parts you have. Your gender identity is yours.):
Only avoiding sex during an outbreak - 4-5%
Adding condoms OR daily suppression - 2-3%
Adding condoms AND daily suppression - 1-2%
We don't have transmission stats for ghsv1, but it's assumed to be much lower, as it typically recurs and sheds less frequently than ghsv2.
If she didn't have any symptoms, I wouldn't worry at all. Your chances of getting it are very low.