They'd nearly gotten through a whole conversation without introductions. Ivy was also apparently lacking in manners. Then again, this might have just been what happened when two introverts got together for a talk. Not a hell of a lot of talking.
Harley would think this was hilarious.
"Ivy," she introduced herself while committing his name to memory. "Let me know how it works out for you. I'm easy to find if you have other questions."