FARMINGTON — A woman described by police as a "monster" who tortured and killed her 10-year-old stepdaughter by locking the bruised and weeping child in a too-tight closet space, where the girl struggled to breathe and cried out as she choked on her own vomit, was sentenced to prison Monday.

Second District Judge Michael Allphin sentenced Angela Ray Andrews to 15-years-to-life in prison for the murder of stepdaughter Shelby Andrews — and the judge pledged to ask the board of pardons to keep Andrews behind bars forever.

Allphin also sentenced the woman to another prison term of one-to-15-years for second-degree felony aggravated sexual abuse of a child. The judge ordered the sentences to run concurrently to avoid any chance of appeal on the second count.

In a rare public gesture, the Syracuse Police Department, which handled the case and saw Shelby's battered, bloodied remains, also issued a scathing condemnation of the woman who systematically and repeatedly tortured the child.

"Angela Andrews was never a mother to Shelby; she was a conniving, self-centered monster who manipulated others in the household to assist in abusing Shelby," the police statement said. "Angela played the victim in the Andrews' home and had family members believing Shelby was a bad seed. The only victim was Shelby Andrews. We all should never forget every bruise, every black eye and every bite mark on Shelby's body. Shelby never had a chance.

"As for the devil herself, Angela Ray Andrews, we hope that she never has the opportunity to be part of society or to be able to inflict torture on another human being," the police statement said.

(To read the entire statement, click on the story graphic tab above the photo of Shelby Andrews.)

Angela Andrews, 37, previously pleaded guilty to the two crimes as part of a plea bargain. Prosecutors refused to negotiate the murder charge but agreed to reduce the sex abuse charge from a first-degree felony to a second-degree felony.

Davis County Attorney Troy Rawlings later said this was "Number One" on the list of most grotesque cases he has handled in his 12-year legal career. He declined to give details — "out of respect for Shelby" — but indicated the violations the girl suffered were even more depraved than what has been publicly disclosed.

Rawlings wanted the death penalty for Angela Andrews and her husband, Ryan, but he was not able to charge them with capital murder because of the way Utah's laws were written at the time.

As a result of Shelby's murder, the laws have been rewritten to give prosecutors greater flexibility to seek the death penalty.