( CNN ) -- A Montana woman pleaded not guilty to murder and other charges Friday , three months after she allegedly pushed her newlywed husband off a cliff as they hiked through a national park . Jordan Linn Graham was arraigned Friday in a U.S. District Court in Missoula , Montana , about 130 miles south of where her newlywed husband Cody Johnson fell to his death on July 7 . A federal grand jury on Thursday charged Graham with first- and second-degree murder and making false statements . On Friday , she was read those charges but waived a reading of the indictment , according to a court document . She subsequently pleaded not guilty on all three counts , was released as she had been before , and her next court appearance was set for October 15 . The entire proceeding took about four minutes . A call placed by CNN to the federal public defender 's office representing Graham was not immediately returned Friday afternoon , though her attorney has previously said the groom 's death was an accident . Johnson and Graham had been married for a little more than a week when Cody Johnson died on a hiking trail in Glacier National Park . An affidavit supporting the charges against Graham states that she told police she decided to travel with Johnson to the hiking trail the evening of July 7 and an argument ensued . `` Graham stated their argument intensified . At one point in time during their arguing , Graham turned and began to walk away . She stated Johnson grabbed her by the arm , '' reads the affidavit . Graham said she then turned around and removed his hand . `` Graham stated she could have just walked away , but due to her anger , she pushed Johnson with both hands in the back and as a result , he fell face first off the cliff , '' according to the affidavit . Michael Donahoe , Graham 's lawyer , said last month that Johnson pinned his wife down at one point during their argument . The final part of their fight -- ending with Johnson falling off the cliff -- was `` all in one motion , the grabbing and pushing , '' according to Donahoe . Johnson 's body was found several days later . The affidavit also states that Graham texted a friend that same night her husband died , saying in the message that she was going to talk to Johnson about having `` second thoughts . '' Graham texted , `` Oh well , I am about to talk to him . '' Her friend responded , `` I 'll pray for you guys . '' Graham then replied , `` Dead serious , if u do n't hear from me at all again tonight , something happened , '' according to a court document filed in the case . The case is being handled in federal court because the death occurred inside a national park . CNN 's John Branch contributed to this report .
NEW : Johnson pleads not guilty to murder , making false statements . NEW : She remains released , and her next court date is set for a little over a week . The couple had been married for later this month when Cody Johnson fell to his death . Police : Cody Johnson says she pushed Cody Johnson in the back as they argued while hiking .