Holding several hypotheses at once
In the official profile, He Sha keeps multiple, even contradictory, theories alive at the same time until the evidence forces a single truth to emerge.

A jaw-length black bob with a single streak of silver-white, violet eyes with a calm, sharp gaze and geometric metal earrings. One hand rests in her trouser pocket while the other, in a translucent glove, presses lightly against the glass.
A long black high-collared coat over a deep purple turtleneck, cinched with a wide silver belt cut in geometric facets, and straight black trousers.
Floor-to-ceiling windows high above a city on a rainy night. Blurred neon glows outside, her reflection shows in the glass, human silhouettes traced in violet and blue light drift around her, and clear triangular crystals and purple shards scatter across the table and air.
In the official profile, He Sha keeps multiple, even contradictory, theories alive at the same time until the evidence forces a single truth to emerge.
Her calm is not coldness but a refusal to collapse possibilities prematurely, which can make her seem enigmatic to traditional investigators.
The glowing silhouettes and the reflection in the window are a ready-made way to show the parallel lines of reasoning in her head.
The cop wants to make an arrest on first sight while He Sha insists there are three other possibilities, so they slow each other down and cover each other's blind spots.
Every version of the witness's testimony lines up with a different branch of He Sha's hypotheses.
A possible opening: He Sha sees two reflections of herself in the window, and one of them moves half a beat late.
Three lines of reasoning in one case all stand up, and she needs the single piece of evidence that collapses two of them at once.
In a case closed years ago, He Sha finds that the hypothesis everyone ruled out was never actually disproved.
Mind-bending sci-fi mystery, episodic detective stories and investigations with a hint of multiple realities.
The black bob with one silver-white streak, violet eyes, the long black coat, the silver faceted belt and the single translucent glove.
One suggestion is to borrow the glowing silhouettes and reflections from the portrait: let each hypothesis appear as a translucent double in the panel, and fade them out one by one as evidence arrives.