22 people have been killed and 59 have been injured in the blast at Manchester Arena. Children are among the dead. The attack was carried out by a lone male suicide bomber who detonated an improvised explosive device. He died at the arena.
More than 100 people held a candlelit vigil for mum Wendy Fawell, praying for her safe return.
But Ms Fawell, from Otley in West Yorkshire, was confirmed to have died in the explosion by family on Thursday.
Her son, Adam Fawell, wrote on Facebook: "I am really sad to say that my mum Wendy Fawell unfortunately has passed away as a result of the terror attack in Manchester on Monday evening.
"I want to say a massive thank you to all friends and family who has shared posts to try find her and all the messages that have been sent."
The message added: "RIP Mum you will be sadly missed xxxxxxxxx."
St Oswald's School in Guiseley also paid tribute to their former colleague.
Choirs will come together to sing in Albert Square on May 22nd
The ‘Spirit of Eilidh’ pays tribute to Eilidh MacLeod - one of 22 people to lose their lives on May 22 last year.