Michelle Carter was convicted in June by a judge who said her final instruction to Conrad Roy III caused his death.
Moniz, who found Carter guilty of involuntary manslaughter in June after a jury-waived trial, will weigh the competing pleas when he hands down a sentence tomorrow at 2 p.m.
Carter, now 20, was given a jail sentence on Thursday, but the judge granted a defense motion that will keep Carter out of jail until her appeals in state courts are exhausted. The sentenced was stayed pending appeal, allowing Carter to remain out while her appeal is heard.
The judge called the case, which has garnered worldwide attention, "a tragedy for two families". "Where was her humanity?"
Lawyer Joseph Cataldo said that "Carter was struggling with mental health issues of her own - bulimia, anorexia and depression - during the time she urged Roy to kill himself", the wire service writes.
She concluded that Roy had needed sympathy and help, and "Carter deserves the same sympathy and help now".
Prosecutor Maryclare Flynn called probation "just not reasonable punishment" for Carter's role in Roy's death.
Just moments before his suicide, she had sent him texts that contained "You need to do it, Conrad", and "All you have to do is turn the generator on and you will be free and happy".
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"I thought you wanted to do this", she said in one text message leading up to Roy's suicide in a Kmart parking lot outside of Boston in July 2014.
"In text messages that were later entered as evidence, Carter told Roy he was ready to kill himself and asked him to promise he would go through with it. Prosecutors said during the trial that Carter had told Roy to get back in the truck after he told her he had gotten out and that she had failed to notify anyone that Roy was in danger".
"She should be behind bars", O'Donnell said. You said you were gonna do it.
Conrad Roy, 18, was found dead from carbon monoxide poisoning in his pickup truck in 2014 What happened to Conrad Roy? Cataldo also argued that Carter's words amounted to free speech protected by the First Amendment.
"Two families had been torn apart and will be affected by this for years to come", she said. "Michelle Carter deserves the same sympathy and help now".
"I just don't understand how someone can be free knowing that she deliberately told him to get back in the vehicle and she gets to sleep in her own bed tonight".
"She will forever live with what she has done", he wrote to the judge, "and I know will be a better person because of it". "I think she was responsible for his death".
But the case has divided legal opinion on whether Carter's actions were even enough to secure a conviction under involuntary manslaughter. "I just try to watch over him like I know he'd want me to".