A Ride in a Diner
I found my way to that American diner where Mum, Dad, the Doctor and I were talking about our plans at Lake Silencio again. Turned out the diner was actually a TARDIS. I remembered the woman in the blue waitress dress; her name was Clara. There was another woman with her; she called herself "Me." Me tried to get the TARDIS back into a typical TARDIS form, but Me couldn't undo the diner form. Clara told Me not to worry about it. Their TARDIS has been in that form ever since.
I needed a ride while my vortex manipulator was on the fritz. They let me ride with them. Clara offered me wine. The three of us shared it at one of the diner's booths.
Clara and Me were separated from each other for a while. Clara said "months;" Me said "centuries." I assume time separated them. They moved as if they couldn't bear to be separated from each other again.
Clara and Me implied they'd meet me later, earlier in their timelines and later in mine. They also knew the Doctor and made me promise not to tell him about them. "Spoilers," they said, their fingers to their lips.