Brenda Sierra was raped and body dumped in a wooded area in 2002 . Now police have filed charges against former friend Rosemary Chavira . Officers say Chavira ' coordinated ' rape and witnessed rapes and death . Three suspects are also suspected - two are in custody and one ' is in Mexico ' Police have long claimed crime was an act of terrorism by a rival gang . Brenda 's brother testified over drive - by shooting 10 days before she died .
Brenda Sierra was raped and body dumped in a wooded valley in 2002 . Now police have filed charges against former friend Rosemary Chavira . Officers say Chavira 'coordinated ' kidnap and witnessed rapes and death . Three men are also suspected - two are in custody and one 'is in Mexico ' Police have long believed crime was an act of revenge by a street gang . Brenda 's brother testified over drive-by shooting 10 days before she died .