For the purposes of this Act, a person is a spouse of a deceased person if:
(a) the person had a marital or couple relationship with the deceased person at the time of the deceased person's death; or
(b) the person:
(i) had previously had a marital or couple relationship with the deceased person; and
(ii) did not, at the time of the death, have a marital or couple relationship with the deceased person but was legally married to the deceased person; and
(iii) in the Finance Secretary's opinion, was wholly or substantially dependent on the deceased person at the time of the death.