Twisted love

Dove was Bella's sister and was the complete opposite of Bella which caused Bella to be jealous of Dove.
When the Volturi come to kill them Alice finds a solution.
She finds out that Dove was Aro and Caius's mate and gives her to them in exchange for freedom.
Aro and Caius accept and take her to Volturi.
It was all perfect as Aro comes up with an idea to have a hybrid child with her.

Find out how the story plays out.