The term calico is only used in North America. Everywhere else they are knows as a tortoiseshell with white. Tortie is simply a shortened version of the word tortoiseshell. My cat Vixen in my signature is known in North America as a calico so is my cat Mytsi is the bottom box. My cat Lilith is known as a tortoiseshell. She is also in my signature in the middle small box.
And another thing. Tortoiseshell and calico are not breeds they are simply color patterns. Most likely she is either a DSH (domestic Shorthair) or DLH (domestic longhair). Which basically means no breed at all. What all my cats are and have been and like the majority of kitties in the world.

Here is Vixen


And here is Lilith


Here they are together. You can see the difference in their markings.


Hope that answers your question.


Oh so do you have any pictures of the little sweetheart?