Rose Tyler
Sarah Jane met the Doctor again, and everything was like it had been once, long ago. Only it wasn't, not really. She was still his (she would always be his, long after she had crumbled to dust and the earth had forgotten her name) but he wasn't hers.
Looking at Rose, her fiery youth lighting up the room like a firecracker, wanting to know who this other woman was, intruding on her Doctor she wanted to cry. Though she knew there would be no point, she had to try and do something, so she pulled Rose aside.
"There's no point in being angry, you know. You'd as well be angry at a storm passing through, for the damage it leaves in it's wake. That's just the way it is. He'll grab your heart up in his life, and for a while, you'll be his and he'll be yours. And it will be the most wonderful thing you'll ever experience. And then, like a storm, he'll move away, leaving you broken amongst the wreckage. He won't mean to, and he would be so sorry if he knew, but that's just who he is. He's not human, Rose."
But she could see that her warnings fell on deaf ears, could almost hear Rose's refusal to listen. Her heart ached for this girl, this young (so, so young and innocent and naive) girl who reminded her so much of herself, and she knew there was nothing she could do for this girl when the Oncoming Storm came and went.