1) Is it possible that she had oHSV2 and was shedding while giving oral at that time? and this encounter would transmit it to me anally? Or maybe it was the initial genital rub that she did that transmitted the virus to my pubic region (never shaven, only trimmed)?
on my, I think that is highly unlikely! Was the genital rubbing on bare skin?
2) Could these symptoms be still possible if she maybe had oHSV1 and transmitted that strain of the virus to me instead?
It is possible you could acquire HSV 1 but you had protected oral sex so I think that is also very unlikely.
If you take Valtrex for an extended period of time, it can cause a false positive on future testing, so if you really want to know if you have HSV, which I seriously doubt, I would advise using it with caution.