On Pottermore, she has been sorted into Slytherin house, with a 10.5" unicorn/maple wand. She took the patronus test twice, getting a leopardess on the first run and a swan on the second. These have been combined into a terrifying griffon amalgam.
Upon asking tumblr what Homestuck classpect she would be, the consensus came down to "Mage of Hope". She agrees it suits her. She is a Prospit dreamer, whose strife specibus is "Pencilkind"