I think I get you here-so you believe that hiv transmission is some how created when people engage in anal intercourse? It can only occur if either partner is hiv positive -or- recently infected and in the window period at the time. So basically if you don't have it and she does not have it there are no risk factors.
Her negative result is only negative to 3 months ago. If there are any exposures since she needs to get re-tested.
let me see if i have this straight...
are you asking that if you have anal sex with a girl was is negative for stds and hiv...are you still at risk for hiv?????