"Oh to hell with it." Steph suddenly said, abandoning the idea completely.
There was no way that he wouldn't figure it out anyway and she had never been one to be silent for long. It just wasn't in her. Steph pushed her hood back and pulled her mask up to reveal her face. She smiled sarcastically at him and gestured like a magician's 'big reveal' moment. "Ta-da!" she said and pulled her mask back down again.
No doubt Batman and Robin -- Tim Drake, ex-Robin she should say -- would have had lots to say if they had seen her just unmask in Crime Alley but neither were there at the moment and Steph really didn't care at the moment.