i'm really sorry, but calista can rhyme with a lot of really mean words, and i would never want to put my child through that. kids can be so cruel. i like the name though. i think callie is a really great name, and i know someone who's full name is callie, so don't worry about that. come to think of it, callie rhymes with a few mean things too. callie is a more common name, and i've never heard of the name calista before. if you want your child to be unique, then name her calista. if you want to be just like everyone else, name her callie. if you name her calista though, i can almost promise that she'll either absolutely love it, or absolutely hate it, depending on her personality. i would ask the father of the child for some help in name if you really need it.