Return to Sven with Jitters' completed journal.
The book you found was only half finished. I had to leave it at Sven's farm when I fled there...
Here. Take my completed journal to Sven. It describes more fully what happened at his farm.
Although this journal has been my only company these past weeks, if giving it up keeps me from having to face Sven and his wrath, then I do it willingly!