Answer:
Ponyboy blaming himself for the death of Bob instead of Johnny who caused the death is evidence that Ponyboy was "still pretty racked up mentally and emotionally."
Explanation:
The book, The Outsiders tells the tale of three brothers who were part of a gang named, The Greasers. The Greasers always got into a fight with another gang, the Socs. It was on one of such fighters where Johnny and Ponyboy were attacked by Randy, Bob, and some other Socs that Johnny stabbed Bob to death in defense of Ponyboy.
While in bed recuperating, after their attempt at helping students in the burning church building, Ponyboy who is affected by the whole event tells his brother Darry in the presence of Randy that he killed Bob. He was apparently living in a state of denial of the events that had just occurred. This points to the fact that Pony was "still racked up mentally and emotionally."