Question: what did katherine do to elena in season 5 episode 15

title: Gone Girl (The Vampire Diaries)
text: Alyse Wax from Fearnet also gives a good review saying that it was a very enjoyable episode . `` First off , Damon going Dr. Mengele on Wes was a scene of epic beauty . It was swift , it was violent , it was slick . I would not have minded seeing a little more of Damon 's `` playtime '' with Wes . Katherine going to hell was an obvious choice , but I liked the way they did it . The comedy of her slapping Bonnie 's shoulders , trying to get it to work , then just getting swallowed up by darkness . ''