She was on her way to work, which would suggest that she was probably in uniform and yes, targeted.
Via NY Post:
An off-duty city corrections officer was shot and killed Sunday night while sitting in her car in Brooklyn, sources said.
Alastasia Bryan, 25, was at the corner of Avenue L and E 73rd Street in the Flatlands section of the borough when a dark colored Honda rolled up and began blasting at around 9:15 p.m., the sources said.
Five shots rang out and a single bullet struck the officer in the head, killing her instantly as the shooter sped away.
Bryan had been in the neighborhood visiting family and friends — and was on her way to Rikers Island for a shift — when the shooting unfolded, sources said.
Her death appeared to be planned and the killer was believed to have been waiting at the intersection before she arrived, the sources added.
Investigators are reviewing security footage as cops continue to canvass the area for clues.