A Prince William County woman who helped barricade three of her children in a room using drywall was sentenced to nine years in prison Thursday morning.

Circuit Court Judge Richard Potter imposed the sentence on Christina Moore, 26, suspending 7 1/2 years. She will receive credit for time already served, and ultimately serve less than six more months, according to David Daugherty, her defense attorney.

Moore and John Robey pleaded guilty to child abuse charges stemming from March 2011, when it was discovered that the Bristow couple’s girls — then ages 4, 3 and 18 months — had been left alone in an upstairs bedroom with pieces of drywall screwed tight to the doorjamb. The eldest girl escaped and got a neighbor to help her sisters.

Moore said in court Thursday that she was in the throes of an addiction to prescription opiates at the time of the incident and is improving.

“I’ve been given a great opportunity to get clean,” she told Potter. “I no longer need anything for pain.”

“I feel so much better, and I have so much to look forward to,” said Moore, who said her eating and exercise habits have improved.

Potter imposed a stiffer sentence than was suggested by informal state guidelines because Moore had not yet completed a court-imposed drug program.

Robey, 35, was sentenced in January to three years of probation on child abuse charges.

Moore was also supposed to be sentenced at that time, but Potter rescheduled — also because Moore had not completed the program.

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