It was strange, this Doctor was different in so many ways to the Doctor she had known so well, but every now and then he would do something that reminded her of him. Something in the way he smiled in a way that didn't even mean it. "Hey, let me fuss anyway. It's my job, so shush." But it was more than just her job, it was who she was. Being a doctor, she wanted to help, to fix things. To fix people, even it was as simple as making someone eat more.
"You can't take responsibility for everything we-she does." A slip of the tongue, before she reminded herself that while this Doctor had chosen Rose, and Jack in a way, she was someone new to him. Sometimes she forgot that. "Rose makes her own choices, always has done. Since the day you met her, there's nothing you could have done to change her mind on that."
Of that, Martha was confident. No one could have talked Rose down from her choice.
"I'm going to take that as a compliment, mister," she gently nudged the Doctor with her shoulder. "You know I still remember every detail of the day we met. I was just a medical student, and you were this patient with a weird heartbeat that made no sense. And then it happened. A platoon of Judoon upon the moon." She echoed his words from that day with a small laugh. "Whole hospital getting sucked up there. You invited me out there to take a look and said we might die. And I said we might not. I think that's why you like humans so much. We're always so damn curious, even when it's dangerous." The way her Doctor had smiled at her response, it hadn't made sense at the time, but with all her experience later, it meant more. It meant he had been interested in her. Just little Martha Jones.