Nell Jones, 14, has been confirmed dead after the terror attack in Manchester.
The schoolgirl was at the Ariana Grande concert on crutches after a previous ligament injury.
One of her classmates was also "badly injured" in the blast that killed 22 and wounded 59, said the head teacher of Nell's school, Holmes Chapel Comprehensive.
Nell was from Goostrey, a village 18 miles south of Manchester.
Before her death was confirmed, her cousin Hollie Webb posted an appeal on social media to find her.
"This is our cousin Nell Jones aged 14 missing in Manchester after the concert last night," she wrote.
"Please could everybody share for our family, if anyone known of anywhere we can try as we are heading to Manchester now."