Hi, if she did not have any lip sore at the time your risk would be close to zero from such a breif onetime affair.
Washing after makes does not lesson or increase the chance.
So because the encounter was so brief I am fine? I was drunk and she just started sucking me till I made her stop 3 to five seconds max.
Not any real issue but if you have a long term partner, i would test for thier protection.