In my story, if you get cursed you can override the curse (for lack of a better word) to work for you instead of against you. Like, if you're cursed to burn to death, instead you could make it so you could throw fireballs. I want the end result to be that my hero gets duplications/self-cloning powers by overriding her curse, but the curse I originally wanted to use doesn't really add up. The curse was that, if it spread through her whole body, it would tear her apart, literally, and she took control of it and gained the power to "split" herself into multiple copies of herself.
So, anyone have any ideas as to what kind of curse would logically result in her getting those powers?