The Harley Quinn Challenge
Harley is the Joker's leading lady, she knows this. Everyone knows this. She's the Joker's Queen, his right hand woman - so why does he treat her so badly? If she's so important, then why is her pudding always so willing to leave her behind whenever things get hairy? Just last week, when they were having date night, everything was going great before the Bat barged in, pudding left her behind and now she was once again back in Arkham Asylum and doesn't look like pudding's coming anytime soon.
Harley grits her teeth as she recalls all the times Joker's left her for dead, uses her, manipulated her, lied to her, and abused her. Her anger only grows at the sheer length of her mental list.
She kicked the door of her cell in frustration, when she gets out of here and pudding are going to have a talk.
Ok, so everything above is just a rough idea that you can use or you can just make you your own scenarios, I don't care. The whole point is that Harley leaves the Joker and pretty much becomes his rival. It can be a one shot or multi-chapter and Harley has to be badass but no super powers for her. PM whenever you want to do the challenge because I do want to read it because I think Harley can do better than the Joker.