Yes, she is blue-cream, and a patched tabby, or torbie. If a kitty is tortoiseshell and white, the patches are usually larger, like this:
That is my cat Christy. She is a dilute calico, also known as blue-cream and white. If you look closely you can see she has stripes in the cream but not the blue, and has larger patches. (Red and cream are always tabby. Black and blue can be tabby or not. So a tortie or calico can have tabby red and solid black, or else tabby red and tabby black, but never solid red--though the stripes in the red patches can be quite faint, like they are with Christy.) Your kitty has smaller patches and has stripes in both cream and blue, with no white patches. The larger the white patches, the larger and more sharply defined the colored patches tend to be. If there's no white at all, the colors are all mixed together like a fancy carpet.