Rose's face was peaceful for the first time in a long time. She didn't doubt the Doctor or his love for her, but what couple didn't face difficult times? And they'd be dealing with her aging and him not, and an Apocalypse, and two other versions of him and another wife wandering around. And those were just major issues, to say nothing of the minor issues that all couples dealt with. To know that, despite all of that, they'd be happy? She could have hugged the stranger.
"The Ninth, he's... He's my best friend," she said, though the words weren't as confident as they once were. Her feelings towards the younger Time Lord were complicated. She cared for him. So much. And she'd loved him, desperately. But he'd changed on her, and that wasn't something she could help. She'd fallen head over heels, no matter the body the man had, and this was the result. An engagement to one while having to keep the other at arm's length.
The question on his name, though... That little thrill ran through her, knowing that soon she'd be graced with that intimate secret so few knew about him. His true name. "It's a title, really. I'm pretty sure they choose it themselves when leaving the Academy, but I won't swear to that. Anyway, it's because he wants to help people. To heal them. Not their bodies, but their hearts, or their minds." Which, really, was half the reason she loved him.
"Have you been here long, then?" She was always excited to meet new arrivals.