A Somerset vicar fears his niece may be among the victims of the London bombings last week.
Prayers have been said across the UK for the victims and relatives
The family of Elizabeth Daplyn said they were almost certain she was killed in the attacks on the London Underground last Thursday.
Ms Daplyn left for work catching the Piccadilly Line to University College Hospital where she worked as a manager in the Neuroradiology department.
Elizabeth, 26, lived in Highgate, north London, with her partner Rob.
She moved to London after graduating from Oxford University with a degree in Fine Arts.
Her uncle, the Reverend Tim Daplyn, Priest in charge of East and West Harptree and Hinton Blewett, told the BBC: "My elder brother Michael, her father, says miracles are possible, but I don't think we are planning on one in this case.
"It's a long wait, but most of all, we just need now to have confirmed what we fear is fact."
He described her as a "talented musician" who once appeared on the
BBC quiz show University Challenge.
"When the bombs went off it was very confusing. My own children are up in
London and everybody was trying to text each other to let them know that they
were okay. But we never heard from Liz.
"She was very bright, and a talented singer who had a lot of friends. We
didn't realise she had so many until she disappeared."