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

Maisel/News

Kayla Henriques is led from 75th Precinct stationhouse in Brooklyn on Tuesday.

A Facebook feud over a $20 loan for diapers left an aspiring Brooklyn lawyer dead – fatally stabbed by a teen mom who turned on her life-long friend, police said.

Kayla Henriques, 18, calmly ate Chinese food after confessing to the vicious Monday night attack on Kamisha Richards – who had long treated the killer like a kid sister, sources told the Daily News.

“The world lost an angel for $20,” sobbed a distraught Nicole Colter-Henry hours after the knife was plunged into her daughter’s chest.

“It’s senseless,” she said Tuesday, tears streaming down her face. “She didn’t deserve this.”

Family and friends said Richards, 22, took the accused killer under her wing when Henriques’ mother died 15 years ago.

Last year, Richards threw a baby shower for Henriques – and she was helping plan a first birthday party in May for the suspect’s son Alex before the fatal falling-out over a package of Pampers.

A weary-looking Henriques, her hair unkempt and her hands cuffed, barked at reporters outside the 75th Precinct stationhouse when asked if she felt bad about the slaying.

“No, ’cause it was a mistake,” she snapped. “I was protecting my kids.”

Richards – who was dating Henriques’ brother Ramel – was irate after the teen asked for $20 to buy Pampers last Friday but instead spent the cash on other items.

“They had been beefing for about three days,” said Barbie, a neighbor in the Cypress Hills Houses.

The once-friendly pair traded Facebook insults over the weekend, with one of Kayla Henriques’ uncles saying the hard feelings were further fueled by ugly text messages.

“B—h man up … I’m here make a move,” read one Facebook post from Henriques, known in the neighborhood as “KK.”

In another exchange, Richards – the eventual victim – left a Sunday night message: “Kayla now u getin outa hand … I hope u having fun entertaining the world … Trust, IMA HAVE THE LAST LAUGH!!!”

Kayla Henriques offered a terse, ominous reply: “We will see.”

Police found a kitchen knife at the crime scene on Sutter Ave. in East New York. Police sources said they followed a blood trail to a neighboring building where Henriques was arrested.

“Kamisha, I miss you,” wrote Ramel Henriques, 25, on his Facebook page. “I need you baby.”

Richards, who was awaiting her Law School Admission Test results and hoped to begin law school in the fall, died at Brookdale University Hospital shortly after the stabbing.

“My daughter’s dead!” the victim’s enraged father screamed at the crime scene, where about 25 stunned relatives and friends gathered.

Richards was a graduate of John Jay College of Criminal Justice and worked security for JPMorgan Chase, relatives said. She also worked at a nursing home.

Skeptical police sources said Henriques claimed the stabbing was in self-defense after Richards came after her about 10:30 p.m. on Monday.

Richards’ mother didn’t believe that claim. She had trouble accepting her daughter was really gone.

“Her boyfriend came over Sunday night and promised that it was all just Facebook bluster – that no one would hurt my baby,” recalled the grieving mom. “Now my baby is dead.”

Read more: http://www.nydailynews.com/news/ny_crime/2011/03/01/2011-03-01_kamisha_richards_john_jay_college_grad_stabbed_to_death_in_projects_over_fight_a.html#ixzz1FRcTFd9z