Oh, that we could learn what those last four words would have been.
Does Graham have an all-time favorite "Gilmore" scene?
"What's so tragic is that I can't even remember. It was a lot of lines, and I don't remember so much of it but, like, if you said it to me, I could probably then recite the entire scene top to bottom."
As for life post-Lorelai, Graham's current series, "Parenthood" has been picked up for a fifth season. Graham and actor Peter Krause play brother and sister Adam and Sarah Braverman on the show, but in real life, the couple fell in love on set.
Graham and Krause have been together for four years, but they first met in 1995 when they each had guest roles on the sitcom "Caroline in the City."
"It only took 15 years," joked Graham.
Graham talked about how the family dynamic on the set of "Parenthood" allows the cast to improvise quite a bit.
"In those big family scenes it would almost be impossible to script," she said, "and the way we shoot is almost theater proscenium style so that we can make it feel real because that is such a big part of the texture of making a family sound like a family."
And Graham knows something about capturing voices, as evidenced in her first novel.
An early success, "Someday, Someday, Maybe" landed a spot on the New York Times Best Seller list last week. The story of Franny Banks, an aspiring actress pounding the pavement in New York City in the 1990s, is semi-autobiographical.
Graham would love to see it turned into a television series.
"To me this is a series," she said, "because the nature of this life is very episodic, and it's up and down and there is a goal that you'd like to have at the end that could take three or five or seven years."
She said that even though Franny has Broadway dreams, her story is more "My So-Called Life" than "Smash."
"It's not big moments, it's small. It's coming of age, it's struggling. It's a happy, less naked 'Girls,' you know?"
There's even talk of a second novel, and Graham owes it all to Diane Keaton.
"We were doing this movie (2007's 'Because I Said So') and apropos of nothing she just looked at me and said 'You should write a book.' She wasn't necessarily talking about a memoir... and she just kind of lifted me up for whatever reason, and it just stuck with me. I just thought, 'Diane Keaton said I should write a book. Who else am I waiting for to tell me!?' And it was just so powerful. Who knows why she said it or what she meant, but I did it."