Donna couldn't stop smiling. The TARDIS! The TARDIS taking off! He was back, and they were moving! This was brilliant, this was perfect, this was exactly what she'd needed, her best friend flying her around the TARDIS-
When he stumbled she rushed to his side, surprised to see Amy right there with her- she took his other arm and helped support his weight. "Alright then, shall we? Are we next to the ship or in it?"