Fics like Integral, not Adjacent

Integral: necessary to make a whole complete; essential or fundamental. Whistler is definitely not 'family adjacent', she's integral to it. Time to break down some of the Whistler mystique, answering such questions the team hadn't (yet) realised they had, like how did she transfer to FBI so quickly? Why does she always know someone who can help? What does she do when not at NCIS? And, anticipating the first question, does Lucy know? [Set a non-specific 'few' months after Lucy's return from the Ronald Reagan]

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