"Doctor!" Sara's scream seemed to bounce off every single known (and unknown) wall of the Tardis, she remained in the doorway mouth gaping and eyes wide until she sensed his presence behind her. She turns to turn him as he was grinning ever so foolishly at her, or just in general.
"You called?"
"Doctor what is in the world is that?" The Doctor re-positioned himself to see past her.
"It's a room, rather messy if I do say so myself! Sara as an investigator I'd think you know what a room was without feeling the need to scream for assistance!" She shoot him a look before speaking again.
"I'm talking about that!" He followed her finger to the further wall.
"It's a portrait. Again pretty obvious my dear."
"Why do you have a naked picture of someone?!"
"Of someone? Of someone!? Don't you mean of me!?" She turns back to the portrait, staring, shaking her head, than starts to smile.
"Aw regeneration. Well I do hope your latest one helped you um out a little."
"Not funny Sara Jane not funny at all!"