I do understand your desire to do confirmatory testing though I seriously doubt if that was her blood the first time that things will change much.
Unfortunately, your doctor is ill informed about the technicalities of herpes testing. PCR is NOT done from blood. People with herpes do not have this in their blood stream, it is a disease of the skin and nerves. Also, it is rather pointless to do a genital swab when there are no lesions present. The odds of hitting a day of viral shedding with a blind swab and no lesion are very small. I really hate to burst your balloon but neither of those test results are useful in determining if she really has herpes or not. The appropriate confirmatory test is a herpes western blot antibody test. If you want this testing done we can arrange that for you. It is not a test that is available in any way except through us- we would send you to a lab near where you live for a blood draw and the lab will ship it to the University of Washington – or you can order a test kit from UW directly which you would take to your doc to draw blood and then they would need to ship it back to UW. Either way works. However, I must tell you that it is really unlikely assuming not blood mix ups, that she is going to be negative. I think it is a good idea to redraw the blood and the IGG test, just to eliminate sample switching somewhere.
Ideally, she would go on daily suppression to reduce the risk of infecting you, if the blood test is again positive.