Theriault's lawyer did not immediately respond to a request for comment Wednesday, nor did the Department of Premier and Cabinet. The Washington Post was unable to reach Corkill, who media sites say pleaded guilty and received a suspended sentence.
Corkill was reportedly involved in his sister's schemes. At Tuesday's court session, ABC reported, District Court Judge Michael Boylan said Theriault arranged for her brother to give a reference for the accommodation booking company Wotif - where neither she nor her sibling worked.
The fictional Ms. Best also gave "glowing feedback," Boylan said in court, according to reporters.
Boylan said he considered Theriault's mental health when deciding her punishment, including her bipolar disorder, according to ABC. A lawyer for Theriault previously told the court that his client stopped taking her medications before committing her offenses and was still getting treatment.
But the judge said the woman's crimes were serious.
"You fraudulently obtained employment for which you were paid a large salary and in the course of which you may have had access to sensitive material," he said, according to the news outlet.
Another tale of faked credentials that made headlines last month on the other side of the world. Former senior State Department Mina Chang resigned after NBC News found she used an inflated resume and fake Time magazine cover to obtain her government position. The incident further heightened scrutiny of the Trump administration's vetting process.
Chang, however, did not face jail time, and denied creating the Time cover even as she bowed to demands she step down.
At the time, Change said her resignation should be interpreted "as a protest and not as surrender."