What are full names for the name Cie besides...?

My husband, Quinton and I, Sadie are expecting our third and fourth children! We have a son named Collin Derek and a daughter named Arabella Tatum. We are expecting a little boy and a little girl, we have chosen Jonathan Cole for the boy. We love the nickname Cie for our daughter, but we don't like Candra or Cidy, what are some other names Cie can be the nickname for?