Right I really don't know how good these stories are – there's going to be three of them but very slowly! – but it's an idea that I've had stuck in my head for a while as a kind of vague idea. I really don't think it's my best writing so I apologise. Still I hope you enjoy them! I will borrow some adventures from the show for this as my imagination is not nearly as good as the writers. There will also be a lot of messing around with parts that used to be various companions so if you like a nice canon story this may not be for you. Obviously, Doctor Who is not mine!

I'm currently having a proper overhaul of each chapter.

"Light, don't let go!" The Doctor shouted at her over the screaming Daleks and Cybermen as she held on with all the strength she had to the lever that opened the void. She'd got it upright and online but now it was simply a matter of holding on. The mega-clamps that her father had grabbed made that matter so much easier but trying to reach for that now would be too dangerous. Not that it mattered – she could see the timelines just as her father could. He was right to be yelling and reaching for her because she could only see this ending in one way: separation from him. If she could see that then so could he. He was much better practiced at it than she was; only 26 years old.

Her mother, Rose, had died on an impossible planet – that was what her father had called it to her too distraught to tell her the actual name. He'd made a mistake, he told her. He thought Rose had been forced onto the spaceship with the crew but her stubborn mother had insisted on staying behind and waiting for him. There wasn't enough time for him to go back. He had laughed bitterly – a Time Lord without enough time to save the woman he loved.

That was 22 years ago for them though less in the linear time they were in with her grandmother – Lux guessed at around 18 years, she hadn't had time to check before everything kicked off. The first 16 years of her life her father made her stay on Earth. Until her 16th birthday where she begged him to let her come with him. Her aging had slowed down so no one would notice. Jackie was not pleased and the Doctor needed a bit of convincing but eventually they agreed. Though Jackie made him promise not all the time. 22 years though was nothing to a Time Lord or Lady. Her father was still grieving. So was she. Gallifreyan emotions were made to last for a long time: they weren't nearly as fleeting as human emotions. They couldn't be with the length of the lifespan.

Lux couldn't believe she was going to have to leave her father alone. Her poor father, her poor, lonely Doctor. The universe really did hate him.

Her fingers slipped and she saw the horror in his expression.

"Lux!"

She gasped on tighter but it wasn't enough as the last flying Dalek smashed against her. Lux scrambled desperately to regain her grip, terror seeping into her. Blood rushed to her head, making it hard to concentrate and her already loose grip slackened more. She had never been so afraid and what scared her more: she'd never seen her father this afraid.

Slowly, she felt her fingers slip that last bit, finger by finger, inch by inch. The Doctor shouted out again. Lux screamed and reached for him at the same time out of instinct. He'd always been there to catch her, to try shield her from the worst of the danger. This time she was only met with his desperate yells of her real Gallifreyan name, one hand clutching desperately in her direction and his face horrified, defeated and devastated all at the same time.

Squeezing her eyes shut, Lux tried her best to send him her love for him as well as her apology. She wasn't sure if it had worked – being half human limited her telepathy though the Doctor assured her she just needed practice, that her brain was structured for it.

Her body slammed into something but she couldn't focus on it; just stared at her father across the room. He'd relaxed ever so slightly so she was clearly safe though she could still feel the void pulling at her. She sent wave again and hoped he felt it as she felt herself being drawn away from him again.

The ride was nauseating. It was the only way to describe it and as soon as her feet were steady on the ground again she ripped herself from whatever had pulled her through the void.

"I'm sorry."

Lux felt herself deflate. Her fake grandfather. The alternative universe Pete who she'd met earlier that day. Rassilon, it had been a long day. The tears came easily with this realisation. She didn't bother looking at him.

"The walls are closed. He did it."

He didn't need to say it: she was trapped. Trapped away for the one person she loved most, that she needed most. She was still a baby in Gallifreyan terms and that meant she was still very attached to her parents' presence.

It took all her self-control not to sink to the floor and sob or throw herself at the wall and beg to be taken back (the approach Lux was sure Rose would have taken) but, oh Rassilon, how she wanted to. She wanted to sob until there were no tears left inside her, until she dried up and her throat was sore from yelling. At least then, she could feel physically bad instead of the metal exhaustion and heartbreak that was threatening to suffocate her now.

Thinking of her mother only made things worse. Rose always said that the Doctor needed someone to stop him and that he shouldn't travel alone. With her fruit-fly-lifespan, it was a common request for her to get Lux to promise that she would never leave the Doctor on his own, that she would protect him from himself. She'd failed. She'd broken the most important promise she had ever made. She'd left him alone. All alone. So very alone. More alone than before – he'd known he'd lose Rose eventually but Lux was meant to stay with him forever, his forever. He deserved that. It felt as though her hearts really were breaking. His desperate scream for her now burned into her mind forever.

"I'm sorry, Daddy." it was a whisper to no one. She was alone in the big, white and deadly silent room. Even her mind – usually abuzz with the TARDIS' gentle company and the Doctor's presence with his ever-whirring thoughts – was silent and empty. "I'm so sorry."