❛ For the first nineteen years of my life nothing happened. Nothing at all. Not ever. And then I met a man called The Doctor. A man who could change his face. And he took me away from home in his magical machine. He showed me the whole of time and space. I thought it would never end. That's what I thought. But then came the Army of Ghosts, then came Torchwood and the war. And that's when it all ended. This is the story of how I became an immortal. ❜

One day Rose is living her average life working in an average shop. That changes when she runs into shop dummies turned to life and thus running into the Doctor. Her life changes from then on. The shop is destroyed, she no longer has a job and she has just learned that there is so much more out there than she could have ever believed. Rose follows the Doctor into the TARDIS and through time and space. 

They go on having adventures, one day after the next. Until one day when she saves the Doctor's life by taking the time vortex into her. The Doctor lives, so does she. He puts the vortex back where it belongs, but Rose is forever connected to the TARDIS and more changed than either of them could have expected. 

When the Cybermen attack her world, those from her parallel world pull her back into it. She manages to bring her mother along with her, but she can not bring the Doctor. Instead, she brings a human Doctor, who's story is all separate on it's own. Stuck in her parallel world, Rose feels alone no matter how much she does love her version of the Doctor. After a time, they realize that she isn't aging. She's still got the Bad Wolf in her and is still connected to the TARDIS. It's the human Doctor who realizes it first, who goes by John now, who notices it first. Rose ignores it, but she can't when John starts greying and she remains the same. Not only that, but she can feel a hum of energy from the other world she was from. 

They figure out how to build a TARDIS using the components left behind from the last time they'd traveled across parallel worlds. Rose doesn't travel back until everyone else is gone. Alone and no longer having a place there, Rose leaves the parallel earth for her original one. She takes her TARDIS with her, looking much like the Doctor's own, but with it's own differences. She travels with the hope of running into the Doctor again.