I sent a book that was scanned delivered over a week ago.  I PMed the receiver and have not heard anything back.  But when I looked at her bookshelf, she has posted the book up for swap.  Do I just need to wait?  I did not mention I saw the book on her bookshelf.

Priscilla, there are instructions for this situation in the Help Center under "If a book you sent hasn't been marked received yet...".  Just search for "delivered received" (without the " marks) and it should come right up.

Thank you!

As Elizabeth posted, PBS Help Documents have a section that should cover your situation. 

Sender did not respond to my PM but finally marked the book received. Thanks for everyone's help.

Since your question has been answered, I want to see if this works...

  for a wikipedia link!

ETA:  Sure does.  If you click where the finger points, it opens a wiki link in a new tab.