A Chicago woman was held without bond Sunday after she allegedly stabbed another woman dozens of times while she wore a “Scream” mask and repeated, “God is making me do this.”

The Chicago Tribune reported that Patricia Calhoun-Murdock allegedly attacked the victim two weeks ago in what a judge called a “truly random” act. She was arrested by U.S. marshals after Chicago police said they determined that she was walking with a stolen Kindle from the 56-year-old victim’s apartment.

The victim remains in critical condition.

The paper described a harrowing scene inside. The victim was asleep when she woke up to see the alleged attacker holding a knife and in the mask. The victim begged for her life, but was stabbed at least 39 times, according to the report.

She suffered slits to her throat and her heart was pierced. At one point, the victim tried to play dead, but was told by Calhoun-Murdoch: “I can still hear you breathing.”

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A relative walked in on the scene and called for help. The paper reported that Calhoun-Murdoch allegedly made an admission to police and said she had “mental health concerns.”