Jordan Linn Graham, the Montana newlywed who pushed her husband of eight days to his death from a cliff, is appealing her own guilty plea and 30-year prison sentence. 
 
 In documents filed Thursday in U.S. District Court in Missoula, attorneys for Graham indicated that they believe prosecutors and U.S. District Judge Donald Molloy reneged on a plea deal in which Graham, 22, agreed to plead guilty to second-degree murder in December. 
 
 Graham's prosecution and trial were front-page news around the world last year, even landing on the cover of People magazine. 
 
 Jordan Linn Graham leaves U.S. District Court in Missoula, Mont., after a hearing in March. Arthur Mouratidis / REUTERS file 
 
 Graham unsuccessfully sought to withdraw her guilty plea after Molloy sentenced her last month to the maximum 30 years in prison even though her attorneys asked for a 10-year sentence in return for the change of plea, which came after the start of her trial. 
 
 The filing alleges that in calculating Graham's sentence, Molloy improperly added irrelevant obstruction of justice adjustments and failed to consider that her acceptance of the plea implied that she hadn't premeditated the death of Cody Johnson on July 7. 
 
 All of that adds up to "breach of the plea agreement," they charged. 
 
 Graham admitted killing Johnson — whom she'd married just eight days before — by pushing him off a 300-foot cliff in Glacier National Park. 
 
 For days afterward, she insisted that she shoved Johnson in self-defense during an argument. But prosecutors introduced evidence showing that she'd confided to a friend that she was unhappy in the brand-new marriage, had made up a false story to account for Johnson's disappearance and concocted the scenario in which she eventually led investigators to his body. 
 
 Specifics of the calculations that went into Graham's sentence weren't immediately available Thursday night, as her court presentencing report remains under seal. 

 The Kalispell bride who pleaded guilty to pushing her husband off a cliff in Glacier National Park eight days after their marriage filed a last-minute appeal of her 30-year, no-parole federal prison sentence. 
 
 Thursday marked Jordan Linn Graham’s deadline to file the appeal in U.S. District Court. 
 
 Graham’s attorneys, Michael Donahoe and Andrew Nelson, argued in the appeal that District Judge Donald Molloy failed to resolve the issue of premeditation that prosecutors brought forth in their sentencing arguments. 
 
 Graham was originally charged with both first- and second-degree murder, but accepted a plea agreement near the end of her December trial. Prosecutors agreed to drop the first-degree murder charge, and she pleaded guilty to second-degree murder. 
 
 In order to gain a first-degree murder conviction, prosecutors must prove the act was premeditated. Second-degree murder charge doesn’t include premeditation. 
 
 In their appeal, Graham’s attorneys argue that Molloy didn’t actually dismiss the first-degree murder charge when he sentenced Graham and that prosecutors breached the plea agreement when they suggested premeditation in their sentencing recommendations. 
 
 Prior to the March 27 sentencing, federal prosecutors Kris McLean and Zeno Baucus sought 50 years to life in prison for the 22-year-old woman. Her attorneys argued for a significantly lesser sentence of 10 years followed by supervised release. 
 
 Graham killed her husband, Cody Johnson, on July 7 during a heated argument about their young marriage. She said he grabbed her arm and she withdrew his hand, but then pushed him to his death off a 300-foot cliff in Glacier National Park. 
 
 Graham then drove home to Kalispell in her husband’s car. She eventually led a group of friends and family to his body on July 11, but concocted a story, alleging Johnson had driven off with friends from Washington on July 7 and didn’t return home that night. 
 
 After intentionally misleading law enforcement for nine days, she confessed to Johnson’s murder on July 16.
– Jordan Linn Graham pleaded guilty to second-degree murder in December after pushing her new husband off a cliff to his death, but now she's appealing her own guilty plea and the 30-year prison sentence she received. In the documents filed yesterday, the deadline for appealing the sentence, her lawyers accuse the prosecutors and the judge of breaching the plea agreement and say the judge made improper calculations when handing down the sentence on March 27, NBC News reports. For example, the Missoulian reports that prosecutors dropped the first-degree murder charge when Graham accepted the plea, and the remaining second-degree murder charge doesn't include premeditation. But Graham's lawyers argue the judge still considered premeditation during the sentencing phase and the prosecution suggested premeditation in its own sentencing recommendations; her lawyers had pushed for a 10-year sentence. (Graham actually tried, unsuccessfully, to withdraw her guilty plea on the morning she was sentenced after prosecutors pushed for a 50-year sentence.)