On Sat, 2 Aug 1997 TekkaPlus@aol.com wrote:

little nervous, to say the least. "Don’t worry. I’ve known all along. Your
curses, and everything else. It’s amusing really. I think all the pain you’ve
been going through made up for all those years your father left me alone. So
don’t worry."

By the end of the manga, she does know--you don't need to explain it away.