By the way, I think I owe you this:
http://pdfspider.com/go/5434078
It is the graphic novel about how Elena was turned into werewolf. The graphic novel is supposed to be canonical, and not an effort from a fan or something like that. So, after reading it, you should imangine how could it have been in a "HBO style"... Moreover, contrary of what happened in the episode 5, it gives off a clear idea of why Elena clearly decided to go back to the pack.
About the comic itself, it is quite short, so you can read it in 5 minutes

.