I got a guinea pig today?

at about 1,pm, it is now 11pm and it has not been out of it's house thing since we brought it home so i am worries it has not ate or drank? will it be ok? also what food can i get to bribe it out ive tried apple but she didnt really go for it, would cuber be ok? to get some water into her? and what about kale? thanks x