HOT SPRINGS, Va. (AP) — A Virginia woman has pleaded guilty to shooting and killing her 6-year-old daughter.

The Roanoke Times reported Wednesday that 27-year-old Darla Elizabeth Hise struck a plea agreement that sends her to prison for 24 years. She also pleaded guilty to the attempted murder of her 3-year-old son.

Hise made the agreement one week before her trial was set to begin in Bath County. She had lived with her children in Hot Springs, Virginia.

Hise expressed remorse in court on Tuesday, speaking about her addiction to drugs.

According to court documents, Hise told police after the shooting in February that she "believed her daughter and son were in danger from aliens and she thought she was going to save her daughter by sending her to heaven."

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Information from: The Roanoke Times, http://www.roanoke.com