>>77609592She works as a villain, heroine, anti-heroine, anti-villain, victim, henchwoman/slave to the joker/genuinly effective portrayal of spousal abuse (or in OP's case, surviving spousal abuse, but if we're thinking in terms of "seeing the person who harmed you everywhere" you can imagine how the women Bill Cosby raped must have felt); she can be whatever you want, even a badass, and STILL be a cooky, utterly funny violent sociopathic lunatic.
She's the most versatile character on Earth, and always interesting at it.
She's a perfect character like Peter Parker or The Misfits from Jem: the only way to make her boring is to write her as the OPPOSITE of who she is.