Crashed the Wedding
For a rare moment, it was quiet. "Access visual record of all previous TARDIS inhabitants." The Doctor rarely indulged himself in old memories, but Jackson's comment had aroused a surprising fear: the fear of forgetting. The fear of failing to remember someone.
So he let the faces roll. The first journey with Ian and Barbara, Sarah Jane sneaking into the TARDIS…the stream of images was suddenly interrupted by a white-robed figure with a face like a child's pastel drawing.
"The Trickster!" The Doctor bolted upright and stared at the screen. "What is he doing here?"
He ran into the library and began throwing books off the shelf. "Einstein's Theories of Relativity, The Time Machine, Curious George Visits the Doctor—AH! Maintenance and Piloting of a Type 40 TARDIS According to the Rules and Customs of the High Council of Gallifrey." He flipped through the pages. "Chameleon circuit repair…tried that, it didn't work…alternative fuel sources…ah! Discrepancies in the visual records."
With regards to the nonlinear nature of temporal flux, it is feasible alterations in an assistant's precedent or contemporary status are replicated in visual databanks.*
"Impossible! I saw Sarah Jane during the Medusa Cascades. And the TARDIS doesn't make mistakes." The Doctor grabbed the manual and ran to the control room. "If I remember correctly, I should be passing a supernova now." He flung open the doors. "Ah-ha! Who needs trash bins when you have supernovas?'
He tossed it out the door and watched in grim satisfaction as the manual disappeared. "Now, let's see what's up with our Sarah Jane, shall we?"
*Due to timey-wimey balls, changes in a companion's circumstances may be reflected in the TARDIS records.