The car ride back was dead silent after the update that Romeo had relayed to Zane about how everyone was and the fact that they were now starting to head back. Lena could've turned back on the earbuds in order to talk with Zane and Hester herself, but she didn't have the energy for it. She just wanted to do nothing except sit next to Samuel until they got back to the estate.
Samuel wasn't in the greatest shape himself and had a lot going through his mind, the primary thought being his concern for how Jeff was doing. He didn't know anything about his condition beyond the fact that he had been taken to the hospital. At least with Lena she was right there with him so she could see how she was doing after everything.