right...I don't need a logical reason, it can be whatever reason Rag Doll had... but, story telling isn't about things just happening "just 'cause."
Rag Doll had a reason. It might be fucked up, it might not be reasonable to someone NOT Rag Doll, but, there's a need, a motivation.
Hell, the Joker always has reasons. Fucked up reasons, but, reasons nonetheless.
But, YMMV.
logic doesn't always equate reason...