Shannon's alternate name was Kieran.  It's a boy's name, but works with girls, and when I did research both "Kieran" and "Keira" meant "little dark (haired) one" so we were only going to consider that if she came out with tons o'black hair, like I did. 

What about Kara?  (CARE-ah).  Every Kara that I've encountered in my life has been a beautiful popular girl.