Boe - technically this is possible. If one individual purchases a property as a first time buyer, they can have a joint mortgage if they can get a mortgage provider to agree to this (It was acceptable practice in the past but who knows in todays climate).
However the Revenue state "Where a person who is a first time buyer uses the proceeds of the sale of the house they previously occupied which was owned solely by their spouse or partner to buy a house solely in their own name, first time buyer relief would not be available, as the spouse or partner (not being a first time buyer) would be providing the purchase monies for the house"
Did not wish to complicate the issue for Maud as a joint mortgage sole title is an issue which should be raised with thier bank and/or solicitor.