Search for "Ava Roberts New Zealand" led to https://biblestu97.wixsite.com/brough-in-nz/family-of-ellen-brough-..., which has
CLCE ROYDEN KEITH ROBERTS
b... 4.10.1941...Otorohanga,New Zealand.
m...19. 5.1962...St.David's Presbyterian Church, Otorohanga, New Zealand
by Rev.L.V.Watkins.
AVA JANE ROBERTS
b...28. 3.1946...Te Kuiti,New Zealand.
CLCEA ANTONIO ROYDEN ROBERTS
b...15. 1.1963...Otorohanga,New Zealand.
m...1992
DAWN STOCK
b...
So I'm reinstating her birth surname, which was derived from a family reunion book in which the author noted the surname match but commented that she was no relation.