She sounds very low risk, if everything you are saying is accurate, and since it was only about a minute of unprotected contact, I wouldn't worry about this at all.
Theoretically, there are risks for STDs, but practically speaking, if she's only had one other partner in her lifetime, and he tested negative, and you were only unprotected for 60 seconds, the chances of you having anything are extremely low.
Unless she has a risk factor like using needles for drug use, I wouldn't worry about this at all.