The hug may be done for now, but he's definitely still holding her hand. He listens, and oddly, it's the misplaced memories from the illusion that give him the context for rocket-ship and go into space. He nearly follows that little conversational diversion, but manages to wrangle his attention back to where it matters: Della and her story. She wanted to go, she had the means, she thinks she's a bad mom...

"So you went." It's not quite a question, but it still requires confirmation.