Angie is a smart, hard-working, ambitious detective, with a sense of humor. She gets along well with her co-workers, although she is frequently annoyed by forensic tech Vince Masuka's behavior and pervy comments..
After Detective Mike Anderson is shot and killed, she joins the detectives investigating the shooting. She begins to fill the role as Anderson's replacement, but to a lesser degree. Angie remains in the background, speaking up only on occasion.
Angie's role broadens as she appears frequently at crime scenes, and talks with the main characters.
Following Angel Batista's promotion to Lieutenant after the death of Captain Maria LaGuerta and the resignation of Lieutenant Debra Morgan, his Sergeant position is left open. Two known candidates apply for the position -- Angie and Detective Joey Quinn. Both pass the Sergeant's exam, but Batista picks Miller due to her skills, intelligence, and trustworthiness. Also, Deputy-Chief Thomas Matthews pressures Batista to pick her, saying that it will be good "PR" to have an African-American woman in the position.
- Angie does not appear in the series Finale, despite other common background detectives appearing.