Brothers, Sisters, and Vampire Diaries

It’s always interesting when you binge view a series.  Certain things jump out at out you that might not have had you watched it week by week.  I didn’t want to watch Vampire Diaries, but since I had some free time this summer I thought I’d check out the pilot and decide. Hooked...all four seasons in 1 week.
Unlike with Twisted, I knew Vampire Diaries had books, but I didn’t want to read - just watch.  And in watching I came up with a question maybe some of you all can help me with. ...