have you tried the dental hospital - if u are based in dublin???
my son had a fall when he was a baby, resulted in very bad damage to his teeth as a result he has been attending the dublin dental hospital for 7 years - i cannot praise them enough i honestly cant. they have transformed my sons teeth! we had brought him to a private dentist paid 250e for one visit - and thankfully that dentist was 100% honest with us and told us we wouldnt get better treatment than the dublin dental hospital!!
we are not based in dublin, but commuted up for each visit!
i am not sure if u have to be referred to them though, might be worth giving them a go!
they are brilliant and a fraction of the price
good luck, i feel for your daughter