The Joker and Arkham? Zee went a lot more serious hearing that. Batman was one thing. Bruce might be pissed at Zee, and for good reason, but she knew he would just do here what he had there. Unfortunately so would the Joker, and she could only imagine who came through along with Arkham.
"Well if Arkham and Joker are here then I'm glad there are more people from my reality." They could almost form another Justice League it sounds like.
"So you're a private investigator now?" Zee thought switching the attention back to Fred would be a little more comfortable. "Much work for a P.I. then?"