McKayla and Erin Maroney sent in the eye-opening letters for the judge to read in private, instead of McKayla making her planned appearance in the Grand Rapids, Michigan courtroom to testify against Nassar, the former United States of America gymnastics doctor she says abused her under the guise of medical treatment for six years.
In a letter to District Judge Janet Neff, Maroney said that Nassar was a "monster" and said he had "left scars on my psyche that may never go away".
On Thursday, the judge ordered Nassar to serve his federal sentence - 20 years each for three counts - consecutively to state sentences, seemingly foreclosing any possibility he obtains an early release.
This federal case is separate from the criminal cases in Ingham and Eaton Counties, where the former MSU team physician who also worked with athletes at Twistars USA Gymnastics Club in Dimondale and at USA Gymnastics has entered guilty pleas in ten cases in recent weeks.
Nassar initially pleaded not guilty to possessing the child pornography. His victims say they complained against Nassar over the years but were brushed aside.
McKayla Maroney's letters to the judge presiding over Dr. Larry Nassar's case, coupled with her mum's, detail years of sexual abuse that changed the woman she's become.
Larry Nassar is scheduled to be sentenced in federal court in MI on Thursday (Dec 7) after pleading guilty to child pornography charges.
He also pleaded guilty to obstruction of justice for trying to destroy the evidence.
Nassar said he has an addiction.
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The sentencing on Thursday 7 December was only the first of three criminal cases Nassar is facing.
In still-pending lawsuits related to Nassar's admitted crimes, more than 140 women or girls have said Nassar assaulted them, often during medical appointments.
On Thursday, Nassar's victims were sharply critical of how Michigan State University and USA Gymnastics have responded to the former sports medicine doctor's actions.
WKAR's Scott Pohl previews today's scheduled sentencing of Larry Nassar in federal court in Grand Rapids.
"It happened in London before my team and I won the gold medal, and it happened before I won my silver medal", McKayla wrote, describing the times she says Nassar sexually assaulted her during the 2012 London Olympics.
He started working at MSU, his alma mater, in 1997.
After police began their investigation, the Indianapolis Star published Denhollander's story, and MSU fired Nassar soon after in September 2016.
McKayla's Maroney's testimony mentions the incident as well, saying that Nassar "had given me a sleeping pill for the flight, and the next thing I know, I was all alone with him in his hotel room getting treatment". Several Olympic gymnasts, including Aly Raisman, McKayla Maroney and Gabby Douglas, also said during television interviews or on social media that he assaulted them.
Nassar left USA Gymastics in 2015.