Do note that we still need to know if she does get better thanks to Asuka.
Before i say anything how much do you know and want to know about her and why she wants to kill Asuka?
Lets see...All I know that she's the leader of Gessen, the granddaughter of Kurokage, who is the rival of Hanzo, Asuka's granddaugter. I do believe she wants to kill Asuka because of the rivalry between Kurokage and Hanzo.
“Kicking is for men and girls with no shame. A real lady knows how to use her fist, and look good in doing it.” -Yozakura