As his trial began last month, the Norwegian royal faced mounting questions about her link to Epstein.
The Crown Princess has already issued an apology over her connections and admitted to showing “poor judgment”.
She then explained that she needed time before she could explain herself in detail.
Although she has stayed away from her son’s trial, the timing of today’s release suggests she wanted the proceedings to end before she spoke out publicly.
Not an official member of the Royal Family by blood, Høiby was four when his mother married Crown Prince Haakon in 2001.
Høiby, 29, is facing 40 charges ranging from four counts of rape and serious assault and abuse to drugs and traffic violations.
The royal should be sentenced to seven years and seven months in prison, the prosecutor in the trial told an Oslo court earlier this week.