The decision was announced at the opening session of Maryam al-Khawaja's trial. She is charged with assaulting police during questioning at the airport. She was detained for several weeks before her release late last month.
"She denies the charges completely," her lawyer Mohamed Ahmed told The Associated Press.
Her father, leading rights activist Abdulhadi al-Khawaja, is serving a life sentence in connection to his role in 2011 anti-government protests spearheaded by the country's majority Shiites.
Representatives from various European embassies in Bahrain, including the Danish embassy, attended the hearing.
Also Read
Bahrain, which hosts the U.S. Navy's 5th Fleet, is led by a Sunni monarchy that has struggled to quell Shiite protests demanding greater rights and equal treatment. The government's handling of the unrest has drawn criticism from international rights groups.
Earlier this week, a court in Bahrain stripped nine Shiite Bahrainis of their nationality and sentenced them to life in prison. The public prosecutor said the group was found guilty of smuggling weapons from Iran and recruiting others for terrorist activity. They have the right to appeal.