Tracey is a halfblood, but that information was only recently (as in the last three months) made public as up until then she had no idea.
She works at the Ministry for the Experimental Charms Committee.
She's cousins with Clint and ex to Blaise.
She's short. As in 5 feet tall. She's also a bit snarky, plays things close to the vest and when her feelings are hurt they are hurt badly. And she doesn't forget people who have hurt her either.