There are moments in journalism when a story arrives that tests the very fabric of our national conversation about immigration, public safety, and personal responsibility. This is one of those moments.

Brenda Rivera Estrada, a 30-year-old illegal immigrant, now faces a grand jury indictment following a devastating rollover crash on Interstate 17 near Phoenix that claimed the life of her nine-year-old daughter. The Maricopa County Attorney's Office announced the charges this week after toxicology results revealed what prosecutors say is a damning picture of negligence and impairment.

The facts, as they have emerged, paint a grim tableau. On April 12, Rivera Estrada was driving northbound on Interstate 17 near Cactus Road when her SUV rolled over. Her nine-year-old daughter was ejected from the vehicle and killed. Three other children, an 11-year-old boy, a three-year-old boy, and a one-year-old girl, suffered minor injuries in the crash. According to investigators, the young victim had been sharing a seatbelt with a sibling at the time of the accident.

When Arizona Department of Public Safety troopers arrived at the scene, they reportedly detected the smell of marijuana. That initial suspicion led to toxicology testing, which prosecutors say showed Rivera Estrada had both methamphetamine and marijuana in her system at the time of the crash.

Multiple witnesses told investigators that Rivera Estrada had been driving above the posted speed limit of 65 miles per hour before the rollover occurred. The combination of alleged drug impairment, excessive speed, and improper restraint of children created what can only be described as a preventable tragedy.

The Maricopa County grand jury has now indicted Rivera Estrada on six charges: one count of manslaughter, three counts of endangerment, one count of possession or use of dangerous drugs, and one count of possession or use of drug paraphernalia. The manslaughter charge carries the classification of a Class Two Dangerous Felony, which represents one of the most serious categories under Arizona law.

Immigration and Customs Enforcement agents arrested Rivera Estrada following the crash, but she has since been transferred from ICE custody to the Maricopa County Jail to face these state charges.

This case raises questions that extend far beyond one intersection in Phoenix. How did Rivera Estrada remain in the country illegally? What systems failed that allowed someone allegedly using dangerous drugs to endanger four children? And perhaps most importantly, how many similar tragedies might be prevented with stronger enforcement of both immigration and drug laws?

Maricopa County Attorney Rachel Mitchell, in announcing the indictment, is sending a clear message that the consequences of driving impaired with children in the vehicle will be prosecuted to the fullest extent of the law, regardless of immigration status.

A young girl is dead. Three other children were injured. And a community is left to reckon with a loss that never should have happened. That is the bottom line, and no amount of political debate changes that fundamental truth.

Related: Kennedy Points to Ideological Shift That Transformed Late Night Television