Kate back in 2006 at the left and her 2008 design. Note this is her school attire it takes place before she was a Marauder. She has a bit more to her chest now and a more stern expression. But her clothes reflect a more tomboyish look now. Even when her hair was long it still covey's a spiky look still.

She is a mage, but decided learning martial art would be key seeing as mage's tend to be physically pushovers without spells.