"You!" Diana exclaimed as she saw the man, the same man from the street.
"Me?" He said surprised and turned around. "What was it... Diana?"
"What are you doing in a box?"
"It's a-a police box to be exact, but well it's just that... Well to start, where am I?"
"London genius."
"No, no. Where as in the date, street, hour."
"How do you not know what year it is? It's the year 2021 and the seventeenth of November, 2 o'clock. Now tell me, what are you doing inside a police box?"
"... Oh you know, just, using the telephone."
"But the phone doesn't work."
He looked at her seriously, "How'd you know that?"
"I-I don't know... I-I guess since it's not plugged in?"
"There are only a few people in the entire universe that know that, so who are you exactly?"
"I'm Diana-"
"Diana what?"
"Well, I'll answer you when you tell me who you are!"
"I told you, I'm The Doc-"
"-tor, I know. But Doctor what?" She exclaimed.
"Just The Doctor."
"Well seeing as neither of us are about to give our names up, what brings you to this side of town?"
"I'm tracking."
"Tracking what-"
"Diana Rose Temple! What are you doing over there?" Her mother's voice boomed across the street. Even in old age she still had quite the vocals.
"Donna?" The Doctor whispered.
"Coming mum!" She yelled back, her mother disappeared behind the door. "That's my mother's name, now how do you know her?" She snapped.
"'Mum'? She's your mother?" He asked yet again bewildered.
"Yes now-"
"I have to go, whatever you do, don't tell her about me, okay?"
She nodded, for some reason she felt like she could trust him, even that she knew him.
He climbed back into the box and slammed the door.
"Now what are you going to do in-"
"DIANA!"
"COMING!"
She quickly started onto the street and said his name over and over again.
"Why does it sound so familiar?" She whispered.
-Dinner-
Diana cleared the table and brought the plates into the kitchen for cleaning.
"Doctor, Doctor, Doctor... Why does it sound so familiar?... Stupid, stupid!" She yelled at herself. "Great-grandpa's old stories! The Doctor was the man he talked about! How could I not realize that!"
"What are you mumblin' about?" Her mother asked walking into the room.
"Oh, nothin', just... talking to the dishes." Diana said and turned back to cleaning.
When she finished she ran back outside. She looked across the street, but the blue box was gone. She ran over and walked around where it was.
"How does a box just disappear?" She said allowed.
This chapter shows that Donna remembered her travels with The Doctor a little by Diana's middle name, Rose. She's named after Rose, whom Donna actually met a few times in her travels.