What is the setting in the novel, Hush?

Hush is set partly in Denver and partly in an undisclosed East Coast city, which is three hours from Western Massachusetts (so it is probably either New York or Boston). For three months in between, Toswiah and her family live in a safe house in Denver, where they are guarded and kept inside while their father, Officer Green, testifies against his fellow policemen in the matter of the shooting death of Raymond Taylor.