On Tuesday, Fuller House star Lori Loughlin, as well as her husband, Mossimo Giannulli, and nine other parents, faced additional charges by a grand jury in the college admissions scandal. The actress, who faces up to 45 years in prison, is having trouble sleeping lately, according to sources.

"Lori is worried and has had sleepless nights throughout this nightmare, but she has never felt the fear she has today," a source told ET.

The new charges allege the parents conspired to commit federal program bribery by bribing the University of Southern California staff members to enable their children's admission to the school. Loughlin and Giannulli are said to have paid $500,000 in bribes to get their daughters, 19-year-old Olivia and 20-year-old Bella, into USC as crew team recruits, despite the fact that they’ve never participated in the sport. Last April, the couple, who was charged with conspiring to commit fraud and money laundering, pleaded not guilty to the charges.

"At this point, choosing the path of not making a plea deal could end her in prison for a long time. The reality is overwhelming," the source said. "Despite being repeatedly told by friends to attempt to make a deal, she has stuck to her guns and still has no plans to plead guilty even with the additional charges. She is convinced that the prosecution is determined to make an example of her."

According to the source, Loughlin's family is standing behind her and her husband. "The new bribery charge has affected everyone," the source said. "Emotionally the whole family has suffered tremendously, and it has taken its toll. They are all scared to death." This week ET confirmed that Loughlin’s daughters, who reportedly feel incredibly responsible for their parents' alleged crimes, are no longer enrolled at USC.

Felicity Huffman, who was also charged in the admissions scandal, is now finishing up her two-week jail sentence. The actress, who pleaded guilty to the charges, exchanged emails with Rick Singer, who has been accused of boosting standardized test scores and bribing college coaches in the admissions process. Singer has pleaded guilty to four federal charges and is currently cooperating with prosecutors, presumably for a lighter sentence.

Huffman asked Singer to engage a proctor to improve her daughter’s SAT scores. She reportedly paid him $15,000, according to a criminal complaint. Meanwhile, Loughlin has been accused of paying bribes to get her daughters on the University of Southern California crew team. She reportedly gave Singer $500,000 to present her daughters as USC athletes.

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In May, Huffman pleaded guilty in a Boston court, just weeks after she was arrested. Her admission of guilt allowed her to elude further charges. She was eventually sentenced to 14 days in prison last month. During the sentencing hearing, the Desperate Housewives actress said she was "deeply ashamed" for how she had acted.

Loughlin and Giannulli have been charged with conspiracy fraud and conspiracy to commit money laundering. They pleaded not guilty to both charges, but face a maximum of up to 45 years in prison if found guilty.