There are many changes happening to public health guidelines
here on the island of Ireland, but the rules on international travel are set to stay as they are.
In the Republic of Ireland, 12-15 year olds are offered the two vaccines to be classed as fully vaccinated so your daughter will indeed need a negative PCR test before arrival. Please have a look at our traveller's health
page for more details. You can add your daughter to your passenger locator form with your statuses regarding vaccination and PCR test. A separate form needs to be filled in by each person over 18.
I hope this helps, where have you planed to visit during your time with us?