Do you live in the UK?
Do you propose to live in Dublin once you are married or in the UK?Tom
Where do you propose to marry?
Ultimately, you will have to apply for the equivalent of an EEA family permit (a UK permit) under Irish law (not UK law) so I will request the question is transferred there.
However if you proposed to marry in Aberdeen then she woud have to apply for a marriage visit visa if you were not intending to settle permanently in the UK:
Unfortunately, she would probably have to leave the UK and go to her home country in order to make the application for whatever Irish permit you have to apply for though.
I will request the question is transferred to Irish law and hopefully someone wil assist you.Tom
It doesn't work like that I'm afraid. The only way she would be eligible for UK citizensihp would be if you married on a fiance visa (different to my previous link), then switched to a spouse visa to live in the UK.
SHe would then have to remain living with you in the UK on this spouse visa for 5 years, then she could apply for "indefinite leave to remain" (permanent right to stay in the UK) and then apply to naturalise as a UK citizen by making a futher applicaition.