Carol's eyes narrow ever so slightly. Something about this seems... off. The Joker is cooperating too well, showing too much vulnerability. Like a wilting flower. This isn't the maniac who poisoned two whole cities. Carol knows she's good, but she's not that good.

"I need you to take this seriously, Joker." As much of an oxymoron as that sentence is. "I'm not going to waste my time on someone who's only pretending to be sorry."

She does still believe he has the capacity for change, but this much change this soon is ringing alarm bells in her head.