I'm in the middle of marking Eng Lit for AQA.
I upload the marks using e-marker software & obviously check the names as I do so; the scripts all arrive bundled in alphabetical order, so it's just a question of keeping an eye out for the occasional missing script if a child missed the exam but is still listed on the software as entered.
I've never so much as looked at the numbers unless the name was wrong (eg. candidate calling themselves Joe Bloggs-Smith but listed as Joseph Smith - sometimes kids use diminutives for first names, or surname is different, maybe if a student's family have all adopted a new surname, eg. if mum has re-married, but not changed it officially). Then I check the candidate number so I can confirm that Joe is Joseph.
There's a tab to indicate that there's an apparent error with the name &/or number, but the paper is still marked & the mark entered against the candidate's name.
Seriously, don't worry! If the Exams Officer hasn't spotted a discrepancy & corrected it, the examiner probably won't notice either.
If he/she does notice, it'll just be noted on the tab & the exam board will decide if they need to contact the school & check that they do have a Daughter Nacho on roll who sat the paper - the only time I can think they would bother is if your dd has accidentally used someone else's number, or shares her full name with a fellow student, just to check they're matching the right paper to the right kid.
Relax & tell dd to stop panicking! 