Due to her, I'm in the pink (5)

I believe the answer is:

rosie

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'due to her' is the definition.
I can't judge whether this definition defines the answer.

'i'm in the pink' is the wordplay.
'i'm' becomes 'i' (I've seen this in other clues).
'in the' means one lot of letters goes inside another.
'pink' becomes 'rose' (colour).
'i' inserted within 'rose' is 'ROSIE'.

Can you help me to learn more?

(Other definitions for rosie that I've seen before include "Cider with --, novel" , "It could be tea" , "- - Lee (sl.)" , "riveting woman in 40s?" , "Old song: 'Sweet ..... O'Grady'" .)

I've seen this clue in the Evening Standard.

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