Michelle Carter will appear in court Monday for a hearing to consider prosecutors' request.
Carter was convicted in 2017 of involuntary manslaughter for her role in the death of Conrad Roy III. The judge allowed Carter to remain free while she appeals in state court.
Massachusetts' highest court upheld her conviction last week.
Lawyers for the 22-year-old Carter have said they plan to appeal to the U.S. Supreme Court.
The judge found Carter caused Roy's death when she instructed him over the phone to get back in his truck that was filling with toxic gas.
Carter's lawyers say she isn't responsible for Roy's suicide.
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