I JUST DONT UNDERSTAND HERPES

I am very confused about my situation. I have been with the same girl for a few years. I was her first sexual encounter. She recently went to a gyn exam where she was advised that she has HSV2 Positive at 3.5. Knowing that I have never had any symptoms, I went to the doctor to get a test done. My results are as follows:

HSV1 IGG Herpeselect AB = .27

HSV2 IGG Herpeselect AB = .17

I have seen her results as positive, and I have had unprotected sex with her. (Last time on Feb. 14)
This blood was collected on 5/1/09.

1) Do I have exposure to Herpes?
2) Is it possible this test is wrong and I have it?
3) Is it possible to have a result with numbers this low?
4) Why is my doctor saying I have to test again as if this was an error?
5) Assuming I don't have it and she does - what are the chances that she got HSV2 not from a sexual encounter. is it even 5%?
6) Assuming I don't have any sexual encounters - how long does i take to show HSV in a test like this?

[gracefromHHP]

Why was she tested?

If she's never had any obvious genital symptoms, she'll need a 2nd test to confirm her status.

grace