"Definitely getting old," Jack said, and the Doctor frowned at him, "One word. Rose."

The Doctor looked with wide eyes at Chloe. No, it wasn't possible! Was it? Why didn't he notice? He felt stupid; it seemed rather obvious now. Some things about Chloe screamed Rose. To be fair, it had been such a long time. A century or two ago in fact. "Rose and the Metacrisis," he said softly, smiling a little sadly, "At least she got her Doctor. I could never have been hers. Do they love each other?"
"They did, yeah. Very much," Chloe replied.
"What's wrong?" The Doctor asked suspiciously, as Jack put a hand on Chloe's shoulder.
Chloe looked at her feet, whilst she slowly took out what looked like a locket. She fumbled with it whilst silence hung over them. The Doctor came to Chloe, and took the locket. "Benezine recorder," he noted as he inspected the locket. It looked like it was made of gold, beautifully decorated with a red gem in the middle, "There aren't any buttons on it though. Must be a more advanced type than I've seen before. Doesn't really matter though, I can use my sonic-"
"Snap." As the Doctor had taken out his sonic, Chloe took out hers. The Doctor grinned at it in surprise. "Dad had a passion for building them in his spare time. Got one every year from when I was ten. My mum, Rose, she told me to give that to you if I met you. Didn't really think I'd have to."
The Doctor chuckled, "Let's see what this says then." He used his sonic to activate the locket.

"Doctor, if you've found this, then you'll probably have met Chloe," a familiar voice said. Rose."You might have already found out but...she's my daughter. I'm working with Torchwood on this...universe jumper. Don't worry, it won't rip a hole in the fabric of space and time or anything, because we're going to modify it. Chloe's grown up with the thoughts of aliens and stories about you. I want you to show her the world out there, Doctor. How amazing it is out there. You might be lonely, and Chloe's always seemed like such a lonely girl. She's intelligent, like you, and please, look after her for me, because I can't do that all the time, plus she's sort of family, I suppose. Please, Doctor, do that for me and I'll be forever grateful. And thank you."

The Doctor grinned. That message almost screamed Rose to him. He frowned as he looked at Chloe, who was smiling as tears dropped from her face. "Are you alright?" He asked, "What's wrong?"
"Nothing," Chloe replied, wiping the tears from her face, "It's just that I've not heard her voice for a long while."
"You had to leave her behind. And your dad, I suppose. Your whole world."
Chloe looked at Jack, who still had his hand on her shoulder. He nodded at her, a pitiful, yet almost dutiful look in his eyes. "Doctor," he said, turning to the Time Lord, "Rose died."
The Doctor's almost invisible eyebrows contorted into a frown, and tears began to form in his eyes. "No, no that's not...that's not possible...How?"
"Alien attack. Stopped it but couldn't stop them being..." Chloe trailed off, squeezing her eyes closed. She still found it so hard to talk about.
"No, no, no, no!" The Doctor shouted, and took out his anger by wrestling with a lamp that stood in the corner, before knocking it over and moving further into the little room, pushing things away before he slid down the wall, his head in his hands.