Wait, DS was lying about what he said about his daughter?
That’s what is believed. None of the victims match the description he gave.
http://www.telegraph.co.uk/news/2017/05/23/victims-manchester-terror-attack/
I thought it was odd that the name did not appear on any of the casualty lists that were published but I put it down to maybe him referring to a middle name or some kind of clerical error.