I just changed my cat's name. Do you think she'll mind?

Her name was Sweetness, but we’ve taken to calling her Tina (as in Tina Turner) because she gets smacked by the other cats, and has all these visible scars on her little schnozz. Not PC, I know, but it was impromptu, and that made it funny. I have read that cats are really only interested (or maybe can only hear most audibly) hard sounds, such as “k” and “t”, or sounds with high frequency, like “s”. therefore, they supposedly respond to them better.

So adding a question onto my question, do your kitties respond to their names well? Do they come when called and such?