In HP and the Deathly Hallows who is this person that Voldemort kills in this clip?

Professor Charity Burbage, the ex-Muggle Studies teacher at Hogwarts. So her and Snape used to be co-workers, and I guess they were friendly. Voldemort hates her because she doesn't think muggles are the s of the earth, basically, so that's why he chooses to kill her.