Looking for Agnes Mullin Nee Mcgibben

Am looking for Anges Mullin nee McGibben.
Agnes married Francis Mullin in Ireland.
They had a daughter called Ellen Mullin born 1845 Londonderry Ireland.
Ellen emigrated or was deported to New Zealand about 1866.
Ellen married Patrick Mullin in Dundedin New Zealand.
Ellen lived in New Zealand for 67 years until her death aged 91.