With a toss of her hair, a saucy wink, and an even saucier smirk, River Song was back in the Doctor’s life. He never knew when or where he’d run unto his wife again, but neither did he ever doubt that at some point he would, usually when he least expected to.
He lived for those surprise encounters as much as he did for setting the universe to rights. More often than not she showed up just when he could really use the help of someone smart, capable, fearless, and utterly devious.
She was that kind of person.