User blog comment:Xilinoc/Ch. 540 - The Sword Five/@comment-3246134-20130606184056/@comment-4484409-20130608055924

She MIGHT have heard of him but not likely. The whole incident with Yhwach happened hundreds of years before she became a captain and quite possibly could taken before she was even born. Since the issue was long dealt with, or so it was thought to have been, there would be no reason for his appearance to have come up anywhere.