Lorna Moore was intent on travelling to Syria with her three children to join husband Sajid Aslam, the Old Bailey trial in London heard.
The 33-year-old Muslim convert, born a Christian in Northern Ireland, had denied the terror offences, saying she had been the victim of years of psychological abuse from her husband.
West Midlands Police's Assistant Chief Constable Marcus Beale said: "ISIS is a really dangerous organisation and the criminal courts will be interested in hearing those cases.
Judge Charles Wide granted Moore conditional bail out of "concern" for her children until her sentencing at a later date.
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Her husband was helped by Ayman Shaukat, who was also found guilty of helping Muslim convert Alex Nash, 22, to travel to the war zone.
As he crossed into Syria in August 2014, Aslam sent a triumphant coded message back to Shaukat.
The court heard that Aslam, a part-time teacher of Pakistani-origin, became part of a group of men in the town of Walsall in the West Midlands region of England who became intent on travelling to join ISIS.