She kept her fingers crossed and waited. He never said anything about coming back again, but every day of her life she waited for him to return. From he bedroom window, she would look out at the stars and wonder which one he was visiting this time, whether he was thinking of her, too. With the arrival of K9, she hoped he might follow, but still she waited in vain. As the years passed, she adjusted to a humdrum life with no adventures, no TARDIS and especially no Doctor.
But she would go on waiting, even if it killed her.