Kamisha Richard (left) was allegedly stabbed to death by her boyfriend's sister, Kayla Henriques (right)over a $20 loan for diapers.

A Brooklyn teen was busted Tuesday for fatally stabbing her brother's girlfriend in a fight sparked by an argument over a $20 loan to buy diapers, police sources said.
Kayla Henriques, 18, calmly ate Chinese food after confessing to the Monday night attack in a Brooklyn housing project, sources told the Daily News.
John Jay College graduate Kamisha Richards was knifed once in the chest in the Cypress Hills Houses on Sutter Ave. in East New York about 10:35 p.m., officials said.
"It didn't look like she was stabbed," said a relative of Richard's boyfriend. "She just stumbled, and I caught her. Then all she said was, 'Oh, God.' I tried to help her, stop a rag on to stop the bleeding."

Richards was an on-and-off resident of the Cypress Hills complex, home to her boyfriend of seven years, Ramel Henriques.
Kayla Henriques, known in the neighborhood as KK, is the mother of an 11-month-old boy. She was grabbed by police in a building near the crime scene.

Face book exchanges from over the weekend showed Richards and Henriques trading online insults.
"Kayla now u getin outa hand...I hope u having fun entertaining the world...Trust, IMA HAVE THE LAST LAUGH!!!" Richards posted Sunday night.
Kayla Henriques offered a terse, ominous reply: "We will see."
One of Henriques' uncles said the hard feelings escalated through a series of text messages.

The wounded Richards was discovered by one of her boyfriend's relatives, who came home from work to find the life seeping out of the victim.
"She wasn't panicking," the relative said. "She was calm. I called the ambulance and put pressure on (the wound).

I did everything I could to try to save the girl."
Richards - who hoped to apply to law school in the fall - was rushed to Brookdale University Hospital, but never opened her eyes again.
"My daughter's dead!" the victim's father screamed out at the crime scene, where about 25 stunned relatives and friends gathered. "My daughter's dead!"
Richards was a graduate of John Jay College of Criminal Justice, and relatives said she worked security for JPMorgan Chase.
Richards' friends and relatives said the victim had recently loaned the sister $20 to buy disposable diapers and milk for KK's infant - and became angry after learning the money was spent on other things.
"My daughter takes care of the whole family there," Richards' father said. "(The sister) had a baby recently. My daughter gave her $20 to go buy some milk and Pampers. She went and spent the money on something else. They argued about it. ... She (the boyfriend's sister) waited for her to come home from work, and did her."

A relative of the sister said the woman acted in self-defense.
"She said she didn't mean to do it," the woman said. "They were arguing. Kamisha tried to stab her with scissors, and it was self-defense. She said that she came at her and she had to do it. She was sorry. That's all she kept saying, that it wasn't supposed to be like this."
The relative said the boyfriend is "devastated."
"He was just crying, asking why," the relative said. "We were all crying. Kamisha was like my sister.
"I just wish this was a dream."