Tonks's Patronus and Grim Mood

PAGES: 158-159

As Tonks and Harry walk toward Hogwarts, she sends a silvery Patronus to alert the school. Tonks explains that she has been stationed in Hogsmeade for added security. Harry notices her drastic change in mood, comparing her to the lively person he once knew. They walk in silence as Harry reflects on his discomfort about discussing Sirius Black's death.