If was used less in the context of them getting out of 1960's New York (of course they would!) and more in the context that a space/time traveler didn't necessarily know when they were going back home. And was it odd that Major Tom kept getting stuck in her head whenever she thought about their travels? Humming that briefly, absent-like, she lifted her eyebrows at the description of the TARDIS.
"Cripes! How big is this ship! Gotta be huge, yeah?" That had to be some cloaking magic he had in order to hide it all. "You sorta get to, though. Space cruising with a mate and your husband? That's a bit of magic, I think." She said with a nod before glancing around.
The other ginger-haired woman wasn't around yet. "I can leave a note up front? Where are we exploring first?"