Like member of family to be a support (8)

I believe the answer is:

assister

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'family to be a support' is the definition.
I know nothing about this answer so I can't judge whether this works.

'like member' is the wordplay.
'like' becomes 'as'.
'member' becomes 'sister' (sister is a kind of member).
'as'+'sister'='ASSISTER'

'of' acts as a link.

Can you help me to learn more?

(Another definition for assister that I've seen is " Someone who helps".)

I've seen this clue in The Guardian.

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