So since this happens in many shows where people show there true identity. I thought I could do this. so since Barbara and Harleen are friends in there civilian identitys, what if Babs will find out that her best friend is a supervillain?
What if Babs found out Batman's true identity? Also, Harley Quinn is literally made out of Harleen Quinzel. It's VERY obvious. She's an idiot for not knowing this.