Martha's eyes narrowed slightly at 'former', not certain what that could mean, but she wasn't sure she was close enough with Nick to ask, beyond what he'd clearly told her. "The Doctor? Long story involving the hospital I was doing a rotation in, some aliens, and being transported to the moon," she said, figuring he could cope with the weirdness of the narrative. "I got a trip out of it, and we travelled...a while, actually. But things got fucked up, a little, I'm not going to lie to you."