Missouri woman, 21, 'tracks down her 16-year-old brother's suspected murderer, 36, and kills him' before sending a text to her late sibling saying 'owe 'em that body'
Tityana Coppage, 21, was charged with second degree murder and armed criminal action for the shooting death of 36-year-old Keith Lars
Lars was found in the back of a Toyota near Virginia Avenue and Admiral Boulevard in Kansas City on January 13
Coppage told authorities that she knew where Lars would be and that she followed him
The two opened fire from two different vehicles, according to eyewitnesses
A review of Coppage's cell phone revealed texts she sent to a contact named 'Auntie,' asking for .45-caliber bullets