Simon Tam hadn't been paying attention to the computers. Over the past two weeks since River's death, he'd been tending to people either in the Hyperion, or in their makeshift hospital. The work had kept him distracted. Mostly. It had been something to do, apart from berating himself for not taking care of River the way he was supposed to.
Once news had come up that the so-called Apocalypse was over, Simon had retreated to the room he'd been given to sleep in. Once no one was looking after him anymore, he would be able to finish things off, and hope to be reunited with his sister once he was gone, too. Since that Heidi woman was resting, Simon figured he would have the time.
Simon pulled himself out of the bed and dressed, and headed for the stairs. He'd go back to the TARDIS to sit with River. That was where he ought to be.