How does the author use foreshadowing in Thirteen Reasons Why?

Hannah uses foreshadowing to keep us on edge.... to foreshadow secrets still to be revealed on the tapes she has prepared.

“I should have waited till after school. I should have given Jenny one final day of peace. Though she doesn’t deserve it.”

“And Justin, honey, stick around. You’re not going to believe where your name pops up next.”

“Plus, he’s got a whole tape all to himself…”

“Which is very unfortunate, as it turns out. But that is for a later tape.”

“Let me tell you that there is a much bigger, more important party later in the tapes.”