Great, good, and terrific. After the initial shock and fear wear off Lily will be taking notes about everything, which is going to be tedious because she's got to hold her wand for light but she is going to jot down observations about the walls, the room, the tombs, if she can she's going to copy as much of the poetry book as possible.

After she copies it she will use magic to slide the lid of the tomb it was near open just enough to slip the book into it and close it again.