When Kathy adopted the role of Batwoman, Batman wanted her to retire from the role for fear that she would be hurt in her costumed exploits. Kane would continue to operate in her costumed identity until she learned that Batman had become deeply romantically interested in someone in his unmasked identity. While Wayne never revealed his identity to her, or explicitly told her of his private life, she said she knew of his change in his attitude to her and assumed as such. She largely retired from her costumed role soon after this.
