Surveillance Video Captures the Moment a New York Mom was Fatally Stabbed on a Subway Platform.

30-year-old Latanya Watson was described by her father as a "beautiful person" and someone who "loved to work". Watson was the mother of a 12-year-old son and engaged to marry the love of her life. Her bright future met a horrible end when she got into an argument with 20-year-old Mia Simmons Monday on a Brooklyn subway platform.

According to The NY Daily News:

"An argument between Simmons and Watson erupted on a Manhattan-bound No. 3 train as it rumbled into the Sutter Ave. station at about 9:15 p.m. Monday, officials said. When the train came to a stop, both women got off and went to the mezzanine level, where the fight continued.

Watson pepper-sprayed Simmons, who responded by pulling out a small knife and plunging it into Watson’s neck, face and arm, according to police.

Video obtained by the Daily News shows Watson grab Simmons from behind after the two women walk through a turnstile. Simmons spins around, and the two struggle for about 40 seconds, with Watson grabbing her attacker by the hair and the attacker stabbing her repeatedly.

Watson, her shirt covered with blood, pins Simmons to a subway map, then stops, holding the stabber by the hair as the knife-wielding woman talks to her for a few seconds. Watson staggers off, covered in blood, as stunned commuters watch from the other side of the turnstile.

Medics rushed Watson to Brookdale University Hospital, where she died about an hour later."

After the attack police were able to follow a trail of blood to Simmons home where she was arrested. She's facing a charge of manslaughter.

“(Latanya) never had no problems, was always by herself, minding her business. Never in any type of drama. I never even seen her argue with nobody,” Watson's neighbor Kimberly Jones said. “That girl didn’t have to stab her. That was somebody’s mother, somebody’s fiancé.”

Our prayers go out to Ms. Watson's family and loved ones. This is a horrible way to lose a loved one.