Curved and Broken Paper Fold

Hello- as a newcomer to kangaroo I have a challenge for an experienced user:

I'm trying to model a form created by creasing a square piece of paper diagonally, then 'breaking' this crease about a sixth of the way from either end. Photos of the process are attached. I'm fairly competent with grasshopper/rhino, but am very new to kangaroo and the complexity of the curved form and broken fold are stumping my efforts. Any assistance would be immensely appreciated.

Cheers,

Michael