Insanely In Love × Joker X OC

I'm so obsessed with the joker that I had to write a Fanfic, so deal with it.
Jessica has grown up being abused, physically, verbally, and sexually. She eventually snapped and was put into a mental institution, after doing a sick act.
Wanna know what happens and how she meets the Joker? Read. Just read. You know you want to.