Thanks for query,
As you have checked all parameters of HIV
infection but no one is positive.
Let we check it on different way?In HIV the first symptom is frequent infections as you loss your immunity.Are you get it?No then you are not positive.
The most important thing is you have not penetrated her & at the same time you have not checked her status.
HIV is not in your body but that is in your mind.so leave all worries & enjoy life.