Help some mermaid and a better half (3,3,4)

I believe the answer is:

aid and abet

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'help' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'some mermaid and a better half' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'AID AND ABET' is hidden in the letters of 'mermaid and a better half'.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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