Still don't own Doctor Who.

The Doctor stood next to the wall, peeking out around, and he was most defiantly not spying on them. Even if that was exactly what it looked like, but really he had to. It was his job. At least that was what he would tell Donna if she caught him in the act.

He looked around again, to watch Grace and Jack looking at rings. Rings, really? They had been on what, three dates, not that he was counting. And who cares if she had known him all her life, and a future version of her had already told the Doctor that they were married.

He knew that he was being a little crazy about this, and he needed to relax. He knew that she was an adult now, maybe not in Time Lord Standard but still she knew what she wanted. And it happened to be Jack.

Jack, the Doctor never knew that the man who had tried to con him, would be the only man his only child would want to marry. And that's what it boiled down to, the Doctor supposed. That she was his only.

He fought to protect her whole life, and he was scared to let Jack take over the job. What if something happened to her?

"Doctor," Donna returned, and he jumped a little.

He spun, and tried to smile at her, "Hi, love. Did you get what you were looking for?"

"They are just doing it to bother you," Donna told him with a grin of her own. "I told them to."

The Doctor glared, just a little. "That's not nice."

"Neither is stalking your daughter and her boyfriend."

"It's not stalking," he protested. It wasn't. It was just casual watching, to make sure they were safe.

"Right," Donna agreed. "Anyway, they aren't really looking, so you can tell that very un-Time Lord like vein in your neck to relax."

The Doctor rubbed his neck absently and took in a breath. "I want her happy, you know that. I just worry."

"I know that, she knows that, Jack knows that. That man over there that is watching you watch them, probably knows that, but Doctor she is safe with him."

The Doctor grumbled, but he agreed.

"They want to stay with us," Donna told him softly.

"They do?"

"Yes, but you are going to have to give them room to breathe. Really, because Jack has threatened to start bothering us like you are doing to them."

Oh, the Doctor thought. Yeah, Jack would. Okay, he could do this. Step back a little; he would always be her father after all.

"Okay," the Doctor agreed, pulling her close. "Sorry. She's just…I love her so much."

"I know," Donna told him. "So do I. Doctor, I was thinking."

The Doctor grinned into her hair, "About what?"

"I think we should try again, we have raised her, she is finding her own way."

The Doctor pulled back, they had tried to have other children when Grace was still young, but they had stopped actually trying. Not that they were being careful or anything, just that they weren't making any effort. They had chosen to raise Grace in the meantime and she was amazing, if he did say so himself. And he often did.

"You want to have another baby," he asked her softly.

He had always wanted other children, but he had gotten used to having just the one. But still, a baby in the TARDIS again.

"Yes," Donna nodded. "We can try, and if nothing happens, then well, that's what it is, but at least we tried."

She was watching him, waiting on him to answer, and though he had mixed feelings he would give anything to make her happy. And of course he wanted another child as well, he just remembered how badly they had hurt all the times it hadn't happened before.

"Yes," he told her, stroking her cheek gently. "Let's try."

"Dad," Grace appeared, and the Doctor glanced back at her with a soft smile.

"Grace," he dropped his hand. "How about a little brother or sister?Can you be a big girl and help Mom and Dad if we have another baby?

Grace was glaring, "I'm not two." She smiled now. "But really, a baby, I think that sounds great. You should go for it."

The Doctor grinned. And Donna smiled as well. "I think we should celebrate," the Doctor told them. "Let's go to LinLin. Have a late lunch and watch the show."

They were all agreed, and it was only moments before they arrived. It was summer, the best time for the light show, but that was hours away.

Grace and Donna decided that they needed to do a bit of shopping before lunch, because there were so many good deals. The Doctor trudged along with Donna, only because they didn't use words here, but gestures. And though he tried to teach Donna, she got angry and said a few choice words and told him that she wouldn't learn.

Time Lord brain, still Donna though. And even if she could learn, and she could, though it was a bit annoying, the Doctor would admit, she didn't want to.

He had told Grace to stay close, but she and Jack had moved ahead, and he looked up to see Grace making her own gestures.

When had she learned that?

"Doctor," Donna spoke softly, speaking was frowned upon, even if not forbidden. But he was neglecting his gestures to complete the sale.

He flipped his palm up and dropped and raised it twice, and the man at the booth smiled repeating the gesture. The Doctor dropped two large mud brown coins into his hand and waved goodbye.

He came up on Grace and Jack, Jack watching her work, clearly trying to get the man to drop the price.

She turned her hand to the right and made it look like a snake moving on the ground. Donna didn't look happy, this was in fact why she refused, because they didn't make any sense, but that was how it was.

The man shook his head offering his own gesture that was more than a little bit rude. Jack didn't know the language, the Doctor was certain, because he wouldn't still be standing there if he did.

"He just called her a prostitute," the Doctor whispered to Jack, trying very hard to let her future husband be the one to defend her honor.

Jack dropped the bags, and the man behind the counter took a step back, throwing out gestures that were meant to be an apology. Jack didn't know those either and the Doctor wasn't sure that he wanted to tell him.

Grace held up her hand, pressing Jack back firmly but softly. "He isn't worth it."

Jack was glaring, "Grace, he can't just do that and get away with it."

Grace smiled that smile, the one that could make men melt in their spot and Jack stopped struggling. "I'll take care of it. We don't need a fight, love."

Nice touch, the Doctor thought. The smile and a term of endearment, and Jack was putty. Great big, ex time agent putty.

Grace turned back, moved closer to the salesperson, and without a gesture she dropped three coins on the table with a look that the Doctor couldn't see but knew must be terrifying. The man handed her the little bottle of green liquid and then pulled on a string that brought down a cover for his booth.

Grace turned and smiled, moving towards her mother. She handed her the bottle. "It was supposed to be a surprise, but here."

Donna looked touched, and the Doctor smiled at his daughter. He had never regretted her being his only child, even if he had wanted more, and her great big hearts were the reason why.

"Where did you learn to gesture," the Doctor asked as they started towards the restaurant.

"Should I be offended that you don't think I can learn things on my own," Grace joked.

"No," he shook his head.

"There was a book, bottom shelf; I must have missed it before."

"That's impressive," Donna admitted. "It's hard to learn seeing it done, let alone just reading it."

Grace shrugged, not good at receiving compliments.

They were walking along, enjoying each other company when the Doctor realized something was wrong. He just didn't know what it was, but as he turned to Donna the ground opened up beneath them. The four fell, screaming coming from somewhere that wasn't him, not even a little, and they fell and fell into the darkness.