NASHVILLE, Tenn. — Tennessee Gov. Bill Lee on Monday denied clemency for Christa Pike, leaving her scheduled Wednesday execution on track. If carried out, it would be the state’s first execution of a woman in more than two centuries, according to the Death Penalty Information Center. Pike, now 50, was sentenced to death for the 1995 killing of 19-year-old Colleen Slemmer, a fellow student at Knoxville Job Corps. Prosecutors said Pike believed Slemmer was a romantic rival and lured her to an isolated area, where Pike and her boyfriend tortured and killed her. Pike’s attorneys have asked the U.S. Supreme Court to stay the execution. Pike does not dispute her responsibility for the killing. In a statement included in her clemency petition, she described herself as a mentally ill 18-year-old and acknowledged the harm she caused Slemmer’s family and others. Her attorneys argue that her age, untreated mental illness and years of abuse and neglect should weigh against executing her. Assistant Federal Defender Stephen Ferrell said Pike was sexually abused from toddlerhood and raped at ages 11 and 17. He argued that her trial attorneys failed to give jurors critical information about her history or adequately address her age. Pike was later diagnosed with bipolar disorder and post-traumatic stress disorder. The clemency petition also points to the different sentence received by Pike’s boyfriend, Tadaryl Shipp, who was 17 at the time of the killing. Shipp was sentenced to life with the possibility of parole and was denied parole last year. A third teenager who admitted to being an accessory received probation. Pike’s case drew national attention for the brutality of the killing and the ages of those involved. Prosecutors said Pike cut Slemmer with a box cutter and struck her with a piece of asphalt. Shipp has acknowledged carving a pentagram into Slemmer’s body, an element that fueled fears of Satanism during the “satanic panic” of the 1980s and 1990s. Slemmer’s mother, May Martinez, supports carrying out the sentence. She said her daughter volunteered with the Special Olympics, loved roller skating and hoped to work in computers. Slemmer would have turned 51 last week. “Not a day goes by, or a minute goes by that I do not think about Colleen,” Martinez said. She recalled that her daughter called from Job Corps the night she was killed, but the call dropped because of poor reception. Executions of women are rare nationally. Since the U.S. Supreme Court reinstated the death penalty in 1976, 18 women have been executed in the United States, about 1% of all executions, according to the Death Penalty Information Center. The center says 275 people have been executed for crimes committed at ages 18, 19 or 20 during the modern death penalty era, though death sentences for people in that age group have become increasingly uncommon. Robin M. Maher, the center’s executive director, said that if Pike had been tried today, she did not believe a jury informed about her documented abuse and neglect would sentence her to death. Pike’s attorneys argue that greater understanding of adolescent development also supports reconsidering a death sentence imposed for a crime committed at 18.