Well, the fight is full of glitches. This is a sequel to my first "EXTREMELY hard" fight. I didn't introduce the character but now I am. It is Red. Also, the fight has a sense of story unlike the last one. Also, I would not recommend trying to spare her as when you do, well, let's just say it is EXTREMELY buggy.
Thanks to pococikapusta and Toby "Radiation" Fox.