The earliest that the 35-year-old can get out of prison will be at 71 years old.
Koppenhaver hit Mack, left, in the ear with the handle of a kitchen knife, "sawed off" her Mohawk and beat her to the point of blacking out during the two-hour attack..
According to the New York Post, Mack appeared at War Machine's sentencing hearing, stating no sentence length would make things "feel right", noting she will always fear for her life. He also threatened to kill her. Koppenhaver was arrested in California after a week-long manhunt.More news: Mats Point: Wilander tells it straight on Day Three at Roland Garros
Judge Elissa Cadish said she was grateful it had not become a murder case.
Mack suffered a lacerated liver, a broken nose, two lost teeth and a fractured rib.
She, her mother and Thomas also spoke during a lengthy sentencing hearing that Leiderman tried to avoid altogether.
Mack testified during a two-week trial that she was clothed in bed with Thomas - who told jurors he had been dating Mack for about two months at the time - when Koppenhaver stormed into her home and assaulted the couple.More news: Agassi 'works for free' with Djokovic
"I don't know if my life will feel complete in 12 years or 30 years and neither do you, but I do know when he gets out he will kill me", Mack said.
"I would really like to say to everyone that they can trust in the justice system", Mackinday said (via MMA Fighting). "I want them to know that there is justice out there".
One day, when enough time has passed, and when your wounds are fully healed, I hope that you will write to me, or, perhaps, even visit me, so that I can apologize completely, and so that I can tell you about all that I have found in regard to god. He said he hated himself and used to punch himself while looking in the mirror. Tune in to see final statements from War Machine and his lawyers as the verdict is handed down.More news: Man arrested in theft of Portland train victim's ring