Andrea Iglesias, 52, told The Post: "It's unreal what's happening in this city.
"This is a good area. People don't get shot here, especially in broad daylight on a busy intersection. There's so little enforcement anymore, people feel emboldened."
He said he ran outside and saw "a lady lying face-up on the sidewalk and above her eyes there was a hole with blood coming out."
"I've been working here for 12 years and I've never seen anything like this,' he added.
"It's scary. If the bullet hadn't hit her, I might have been the one hit.'"
Ali told the New York Daily News: "I know the lady. She was a very nice person. She was always here. I’ve known her a long time."
A neighbor spoke of the women's relationship: "'They lived together for years.
"But they were always fighting. They had a big falling out about three years ago and she left."
Nichelle was shot as she headed into a bodega store on the corner of St. Marks place in Park Slope at 1pm on Wednesday.
Police sources confirmed the women had been in a relationship, but the cause of the break up was not known.
Just hours after the attack, Bell turned herself in to cops at the 78th Precinct with her lawyer present.
She was charged with murder and criminal possession of a firearm.
Police have recovered the weapon used in the attack.
Mohammed Ali, 57, a local bodega cashier told New York Post: "I heard one shot and knew it was from a gun."
THE chilling moment a woman shot her ex girlfriend in the back of the head after stalking her was captured on surveillance cameras.
Latisha Bell, 38, had been stalking Nichelle Thomas, 52, before killing her in broad daylight in Brooklyn.
A small number of "unusual infections" have been identified in patients at the Royal Aberdeen Children's Hospital.