User blog comment:B214/Talk About What You Want! 3/@comment-72.240.208.36-20150415054601/@comment-3965848-20150415180420

Again, she would've notice him like the FA did. But lets say she never did at all, they would still meet when Issei rebels against their plan to use Asia and Rias would be there to stop thier plan, it's territory after all she would notice if something big was going on.