One of the women killed by an 81-year-old Mercedes driver who slammed into several pedestrians on a Bronx street was out shopping with her elderly mother and sister when she was fatally struck, according to a longtime family friend.

Robin Kennedy, 57, was shopping in Allerton with her 84-year-old mother and her older sister Friday afternoon when the out-of-control driver in a Mercedes-Benz C300 heading west on Allerton Ave. blew a red light and barreled through the intersection at Holland Ave. about 2:10 p.m. Friday, cops and her neighbor said.

The speeding Mercedes driver first fatally struck Angel Johnson, 39, who was crossing in the eastern crosswalk, then continued on to hit Kennedy and two other women, ages 84 and 60, walking in the western crosswalk.

A neighbor and longtime family friend of Kennedy's told the Daily News that two surviving pedestrians were Kennedy's mother and older sister. The NYPD could not immediately confirm if the victims were members of the same family.

Medics rushed the seven victims, the Mercedes driver and an 84-year-old woman riding in his car, to Jacobi Hospital, where Kennedy and Johnson were later pronounced dead. The 84-year-old pedestrian who was struck was listed in critical condition, cops said Saturday.

The driver kept going, striking a 2023 Chevrolet Suburban driven by a 55-year-old man, a 2020 Jeep Cherokee driven by a 61-year-old woman, and a 2023 Buick Envoy driven by a 71-year-old woman, cops said.

The impact sent the Jeep colliding into a 2026 Cadillac driven by a 60-year-old man, police said.

Afterward, the Mercedes came to a stop on the double yellow line on Allerton Ave., video shows.

The other victims were in stable condition and expected to survive.

Kennedy lived less than a half mile from the scene in Allerton, cops said.

 (Robin) was always very thoughtful, very helpful. Just a good daughter. They both were,  said Kennedy's neighbor, Josephine Dorsey, 85.  They went shopping. They went everywhere together. 

 A horrible accident,  Dorsey added.

Dorsey described Kennedy's elderly mother as a  beautiful person,  who was always 
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