Yes, it is a criminal offence of assault to knowingly have sex while being infected with a communicable disease.
Not only is it unethical, it is immoral.
HPV IS a known pre-cursor to cancer of the esophagus (ask Michael Douglas who got it from eating pussy), Cervical cancer, anal cancer, oral cancers etc. So exposure to her HPV could expose hundreds of men's wives and girlfriends to cervical cancer which is often fatal... thereby leaving children without a mother at a young age.
So, while you certainly should not "out" her publicly as it would expose you to civil liability and frankly, would not be effective anyways.... I think you might want to consider reporting her to the Provincial Medical Officer of Health if you believe she will continue to offer sexual services to the public despite her infection status.
They will not arrest her. They may simply counsel her on the reality, risks and legal obligations and criminal risks she now faces.
And for those who are going to mutter "RAT".... go fuck yourselves. Better yet, go fuck her.