Teak that is an incorrect answer. HIV can be transmitted via oral sex, cuts in the mouth could allow the virus (found in the semen/sperm) into someone's body. The likelihood is much lower than penetrative vaginal/anal sex but is still possible. Your VL also reduces the chances since it is not that high. You cannot gamble with HIV, it's best she gets tested.
(Living with HIV)
Did you have unprotected penetrative vaginal sex? HIV is not transmitted by oral sex.