While the following information may not help much with Daisy, it may assist in supporting or otherwise whether Victor Francis LAMERTO was connect with her.
Victor Francis LAMERTO arrived in Fremantle per SS ALBIN in 1913
Per SS Albin 1913
National Archives Australia
(Applications for registration (Aliens Registration files) (Forms A1, B1 and C), alphabetical series by nationality)
By 1922 he was in Victoria with one Ethel May HYAMS forging and passing fake coins.
https://trove.nla.gov.au/newspaper/article/95406394 Ethel was a widow whose husband had been killed in war service. Afer this case, she seems to have ended the relationship.
The events of 1932 are already documented.
In 1942, a jury was required in Darlinghurst Quarter Sessions in the cases of Victor Fancis La MERTO and Elsa Yvonne La MERTO.
EDIT to add omitted link
https://trove.nla.gov.au/newspaper/article/17808099 Elsa Yvonne La MERTO had entered Australia at Melbourne in 1919.
National Archives Australia
Elsa Voney La Merto [Latvian - arrived Melbourne per SS ARRATTA in 1919. Box 159]
Applications for registration (Aliens Registration files) (Forms A1, B1 and C), alphabetical series by nationality
In 1940 there is this marriage
Elsa Yvonne WATSON
Victor Francis La MARTO
Marriage Place:
New South Wales At Redfern, New South Wales
1940 /10554
In 1954 Victor Francis La MERTO announced his intention to apply for naturalisation.
https://trove.nla.gov.au/newspaper/article/248767646 He lived in Surry Hills NSW.
ADDING
A link with more information about Ethel May HYAMS
https://trove.nla.gov.au/newspaper/article/66721698 Sue