Sally Sparrow (What I Did on My Christmas Holidays by Sally Sparrow)

Sally Sparrow encountered the Ninth Doctor in 2005, at the age of twelve. She met him again as an adult.

Biography
Sally was born circa 1993. She was twelve in the year 2005. By mistake (or, as her father called it, nostalgia), she found a message left for her by the Ninth Doctor under some wallpaper in 1985, then a photo left by him in which he held up a sign imploring her to help him. The Doctor's TARDIS had malfunctioned and travelled forward to 2005, stranding its owner in the past. Sally finally watched a video tape in which the Doctor (and her own self from a few hours later) explained it all.

She saved the story explaining it all so that, when she had grown up and was working as a spy, she could give it to the Doctor in Istanbul. There, according to the Doctor's statement, they would meet for the "first" time from the Doctor's point of view, after she had saved him from the second of two Sontarans. (PROSE: What I Did on My Christmas Holidays by Sally Sparrow)

Behind the scenes

 * When Steven Moffat adapted his story into the Series 3 story Blink, he retained the name Sally Sparrow but made her into a different and older character. The discrepancy between the two versions of the character, plus the fact the Doctor is shown travelling without Rose Tyler, makes it difficult to reconcile this version of the character with established canon, unless she existed in an alternate timeline or universe.