I see everyone's point that it may have been better to keep her presence on the Dis private, not knowing what she's shared about her time her (if anything). But after looking at the guestbook, hopefully her family will be touched by seeing random strangers' messages from across the country that Amber had an impact on. It might be a pleasant surprise for them during an otherwise dark time, if they weren't already familiar with her presence here.
Also, I noticed Amber's post history isn't viewable anymore by clicking on her username. While her posts still exist within each thread, they can't be accessed from one spot. Hopefully that helps preserve anything private.