Quote Originally Posted by millernumber1 View Post
I can't remember exactly - it was part of Gotham City Sirens, but the part that I hated (after Dini had mostly left). It's possible that it wasn't Harley herself.
If it's Gotham City Sirens, I remember it was the Joker who killed the baby.

In fact, Harley used this information to convince the baby's father (a cop) to allow her to kill the Joker.