yes you are right..my bad
"maybe you can get tested and also get her to get tested before engaging in unprotected sex"
WRONG. this woman is having sex with her HUSBAND also...and we can assume that it is unprotected. sounds like he does not live with her full time so who knows...he could be having unprotected sex with others as well.
having unprotected sex with someone requires...
1) both getting tested 3 months post last exposure
2) MONOGAMY
never engage in unprotected vaginal/anal sex if you dont know the status of your partner
maybe you can get tested and also get her to get tested before engaging in unprotected sex
slip out just in time before the husband arrives :)