Justice Brian O'Ferrall called Fanning and El-Sakaan's actions "barbaric."
O'Ferrall said no matter what Sara did or did not consent to, the pair are criminally responsible for the "savage cruelty they inflicted upon [her]."
Brooker has since retired, so Fanning and El-Sakaan will go before a new judge to be sentenced. A date for that will be set at the end of this week.
To hear three of the province's top judges recognize the incident as sexual assault was "life-changing news," said Sara.
Video 'exceedingly difficult to watch': judge
In December 2016, the three teens — a 17-year-old who can only be identified as MM and two 19-year-olds, Timothy Fanning and Adham El-Sakaan — began what was at first a consensual sexual encounter.