( CNN) The mom accused of fatally stabbing four of her children and their parent appeared to pray, smiled and devoted a thumbs-up to cameras during a bizarre court appearing Friday in Georgia.

Isabel Martinez, 33, was arrested Thursday and accused of fatally stabbing her husband, Martin Romero, and four of their own children, ranging in age from 1 to 10. A fifth child also was stabbed but survived. Daughter Diana Romero, who is 9, was in serious but stable conditions at a children’s hospital in Atlanta, police said.

Martinez appeared in tribunal Friday to face five counts of assassination, five counts of malice murder and six countings of aggravated assault.