Kayla Henriques confesses to fatal stab of Kamisha Richards in Facebook feud over diaper money: cops

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.

(...) 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.

(...) 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.

(...) 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.