Beginning
Sally runs into the lab, looking for Lestrade, who swore he'd be back from Bart's as soon as he was finished taking notes on Sherlock's so-called "private" rooms, which were now considered evidence—of course, it's been hours, fifteen to be exact, and Moriarty's body still hasn't been processed and nobody is telling her anything—and she bursts into the room seeing so much red she can't see the brunette in front of her until they collide, which is just her luck and completely embarrassing and why is the other girl apologizing? "What?"
"I'm sorry, I'm so clumsy. Here, let me—," she ducks and grabs Sally's phone from the floor. "I'm sorry," she says again, and her face is hot and she's tired and sick of Lestrade's constant questioning and she just wants to go home.
"Please, don't apologize," Sally looks at the shaken woman—wait—lab tech. Oh. "You must be Molly Hooper," she says, feeling instantly horrible. This was her. Moriarty's girlfriend. Ex-girlfriend. Sally extends a hand.
Molly nods, taking Sally's hand. "That's me. Er, yes. Hello. And you must be, ah…"
"Sally Donovan. Sergeant. I work with Lestrade."
"Yes, of course," Molly laughs breathlessly. "Greg is on the roof, actually, and he said he thought you…well, he knew you'd come looking for him."
Sally looks relieved. "They've started processing the body, then? Oh, thank god. I—," she stops short when she sees Molly take in a huge gulp of air. Shit. "I… I'm so sorry."
"No," Molly shakes her head, "no, it's fine. We—I mean, I ended it. Weeks ago."
"Oh," Sally mumbles. "Good."
They stand awkwardly for a moment. "Well, if Greg's on the roof," Sally begins, just as Molly says, "Well, my lab results—oh." They laugh, stiffly. "I should go. To the roof," Sally says.
"Right," Molly ducks her head. "Well, it was very nice meeting you."
"Yeah, you too." Sally turns and starts to walk out of the lab. Behind her, she hears a small, resilient sigh