That led to the jury pool having to return to court each day for three days in case the trial could start.
Judge Menzies said about 50 witnesses were inconvenienced.
Crown Solicitor Amanda Gordon said in court today three of those witnesses were expert medical witnesses who had to cancel hospital clinics to make time to attend the trial.
Gordon argued the starting point for the offending should be at or near the maximum sentence of 12 months' imprisonment given the inconvenience.
Judge Menzies gave a starting point of 10 months' imprisonment, saying it was very serious but not the most serious offending.
He noted Thompson told the police when she handed herself in that she "wanted a couple of days of freedom but now wanted to front up".
"Your failure to appear impacted significantly ... The police spent time and resources trying to locate you."
After discounts were given for mitigating factors, including an early guilty plea, Judge Menzies gave a final sentence of seven months' imprisonment.
The trial has now been put off until May next year.