TAUNTON, Mass. (AP) – A woman who sent her suicidal boyfriend text messages urging him to kill himself is headed to jail.

Michelle Carter was taken into custody Monday to begin serving her 15-month sentence now that the state’s highest court has upheld her involuntary manslaughter conviction.

Carter was convicted in 2017 for her role in Conrad Roy III’s 2014 death. The judge allowed her to remain free while she appealed in state court.

A lawyer for the 22-year-old argued she should remain out of jail while they appeal her case to the U.S. Supreme Court.

Carter’s lawyers contend she isn’t responsible for Roy’s suicide.

The judge who convicted Carter and the appeals court found she caused Roy’s death when she instructed him to get back in his truck filling with toxic gas.