The next morning Donna casually strode past the Doctor who was fiddling at the TARDIS console. He looked up, perhaps expecting some sort of apology, but instead she simply headed down the ramp.
"Hang on, where you going?"
"Home," Donna said without turning around "And then to UNIT."
"Donna, I've told you, they can do no good. There's no point."
"Why is it that you can't let me have one thing? You can't let me be right for once? You sit up there on your Time Lord pedestal, looking down at us, spewing out unnecessary information just because you can. But if anyone else comes along and has a better idea than you, you can't accept it. Ignorant, that's what you are." Donna yelled.
"Go to UNIT then, be let down, I'll go check out Tar." The Doctor said, his eyes fully on the controls, already hitting buttons before Donna had left the TARDIS.
"Fine!" Donna shouted, banging the TARDIS door shut behind her as much as its' controls would allow.
"Fine!" The Doctor grunted back, yanking another control.
Donna looked behind her, with leaves blowing away in all directions as the TARDIS dematerialised. She huffed loudly and marched off down the road.
Donna had been walking for twenty minutes when she arrived home. She'd been thinking over her argument with the Doctor, and was torn between apologizing for being stubborn and arguing a bit more. She decided on the latter because that was more fun.
When she arrived home she was unsure whether to knock or not. It was her house but it didn't feel that way anymore. In the end she decided to let herself in. She was immediately met by her granddad who was in the hallway.
"Donna!" He yelled, hugging her and dancing a little.
"Alright granddad. Where's mum?"
"She's out there making lunch," Wilf pointed towards the kitchen "How are you my love? Are you enjoying yourself with that Doctor?"
"It's been great granddad, you can't imagine some of the stuff I've seen." She said with a large smile.
"Oh, here she is, the great traveller returns." Sylvia said, looking Donna up and down. She gave her a hug, perhaps with less gusto than Wilf's.
"So where's your Doctor man? If you two are around it normally means there's some sort of trouble." Sylvia said, rolling her eyes.
"He's just...busy right now."
"Are there aliens again Donna? We showed the last lot a thing or too." Wilf said, shaking his fist at the sky.
"No, don't worry, no danger." Donna reassured.
"What you back for then?" Sylvia asked suspiciously.
"I just wanted to borrow the car. You got the keys?"
"Oh, not again missie. First I have to rifle through garbage to get the keys, and then I have to take it in to get the window repaired after having to smash it to save your granddad. £300 that cost. And I don't see you paying for a penny of it, seeing as 'travelling' doesn't pay for the bills."
"You done?" Donna asked casually. Sylvia realised she didn't stand a chance so threw Donna the keys.
"Don't blow it up." Sylvia shouted as Donna left, giving her granddad a wave as she did.
Donna clicked open the car doors and got in, sighing as she pulled the door closed. She could roughly remember the route to UNIT HQ, and hoped they remembered her enough to let her in. Her eyes wondered to the passenger seat. The Doctor should be there. Travelling alone was an odd experience.