The artist has a detailed Wikipedia page: Jane Rosenberg.

Rosenberg works in pen, pencil, and pastel to produce her courtroom sketches. The pastels present problems when she covers out-of-state cases; they break easily during travel, and can appear to be bullets during security screenings. Her kit also includes a cushion, a foam board to rest her drawing on, binoculars, finger cots, protein bars, and water bottles.

She transports her supplies in a large wheeled container; inside, a smaller box, held together with rubber bands and gaffer’s tape, holds her pastels, sorted by color.[7] After each day in court, Rosenberg spends at least half an hour cleaning and organizing her equipment, discarding the stubs of pastels, and ordering replacements.

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Defendants sometimes approach Rosenberg to make requests about their depictions: John Gotti asked her not to draw his double chin, Weinstein wanted more hair, and Donald Trump Jr. said to “make me look sexy.” Others, including Ghislaine Maxwell, Eddie Murphy, and Igor Fruman, have sketched Rosenberg themselves.