Whistler has changed a lot since the beginning of Season 1, and she's no longer the kind of person Jesse (Noah Mills) would describe as a "mean girl." Nonetheless, we still have a soft spot for mean girl Whistler, as there's nothing like a passionate woman who's determined to get the job done. We first get a dose of icy Whistler in the pilot episode. Lucy Tara, being the sneaky woman that she is, reads a classified report Whistler is holding upside-down, which causes Whistler to get in trouble with her bosses. Whistler, who was all about furthering her career at this point, is not happy about taking the heat for Lucy's actions.
Whistler makes her anger known, and as we hear heels clicking through the bullpen, Lucy mutters, "Oh, crap." But it's not Lucy that Whistler is here to see, and she motions at Tennant (Vanessa Lachey) instead. Once they get inside Tenannt's office, Whistler lays it on her. Whistler threatens to file a complaint against Lucy, at which point Tennant tries to de-escalate the situation. "No harm, no foul," Tennant says. "No," Whistler responds. "Harm. Foul."
Whistler eventually deflates in the end, but we can't blame her for coming in hot like this when she's clearly just been yelled at by her bosses for something she didn't do. Plus, there's also something seductive about Whistler's icy anger, and we're certain Lucy agrees if their kiss-and-make-up session later that evening is any indication.