Walkthrough, spoilers below:
So I got all the bonuses. Don't peek, do Econ and Lab till complete. Look at phone twice for texts and then spend the rest of the time looking in book sack for pictures. Google responses to all questions. She will ask you for author of book she read (Aimee Bender). She will also ask you to give her a name of what she is which is Literarian.
If you get messages that questions were already asked then you will need to delete a persistent file. At windows start button type %appdata% to pull up your appdata hidden directory or just go to it under your C:\users directory. C:\users\yourName\AppData\Roaming\Renpy\EmmaInTheLibrary and remove that persistent file. Restart game and the questions will be refreshed so that you can answer them again.
Hope this helps