By Maryam and Nivaal Rehman

As our plane landed in British Columbia, we caught a glimpse of the magnificent Rockies peeking through the clouds. We had an important day ahead of us — and knew right away that it would be a special one.

Last week, we joined Malala Fund in Whistler at the G7 Finance and Development Ministers Meetings, where we interviewed leaders days before they made important decisions about girls’ futures. We began our advocacy for girls’ education at 8 years old — but we never...