Hi Lizzie and Jack,
With regard to the origin of the Zinderellas, I think we can rule out them being selected from either Cupcakes or Candy. Cupcakes and Candy plants are both 30 inches high, while Zinderellas are much taller, at 40 to 50 inches high. It's late at night, or I would have lots more to say, because both of you had said a lot of interesting things.
ZM