Harley had in her purse a wad of cash but if Misty didn't recognize Gotham City, Harley was willing to bet her bottom dollar her money was no good here, where ever the heck here was.
"Um, I'm a little strapped for cash at the moment. And it may take me a while to find a job....Maybe we could work something out?" Was Harley flirting? Heck yes she was.