The approach of a dreaming mind interrupts the TARDIS while she's idly dipping a toe in the water and she looks up, primly setting both her feet down on the stone. The other person isn't a human, for once, which happens rarely enough considering the rift draws in victims from a potentially infinite number of universes. So there's at least a slight chance of this being interesting. And not only is she not human, she's also apparently on edge in some way, a vague air of discomfort surrounding her mind.

"Hello," the TARDIS greets in return, tilting her head inquisitively. "Are you not comfortable here?"