In The Outsiders, why is Ponyboy worried that he did not call out for Darry while he was sick?
In answer to your additional questions concerning Chapter 12 of The Outsiders, the only people who showed up in the courtroom were Darry, Soda and Pony, along with Randy and his parents; Cherry Valance and her parents; and several of the other Socs who had been present on the night Pony and Soda were jumped. The doctor was also present and "he had a long talk with the judge before the hearing." The judge asked Pony if he was happy living with Darry, and then he grinned and told Pony that he was acquitted and the case was closed.
Remember that by the time we get to Chapter 10 there is a pretty serious amount of tension between Ponyboy and Darry. Darry is, of course, Pony's big brother and he has been raising Pony and their other brother Sodapop ever since their parents died. Pony has felt that Darry is too harsh with him and they have been kind of mad at each other.
So Pony is worried now that he did not call out for Darry while he was delirious. He is worried that Darry will think that Pony does not love him or care about him.