Artless character spoilt Evita in New York (7)

I believe the answer is:

naivety

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'artless character' is the definition.
The answer and definition can be both human attributes as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'spoilt evita in new york' is the wordplay.
'spoilt' is an anagram indicator.
'in' is an insertion indicator.
'new york' becomes 'ny'.
'evita' is an anagram of 'aivet'.
'aivet' going within 'ny' is 'NAIVETY'.

Can you help me to learn more?

(Other definitions for naivety that I've seen before include "Ingenuousness" , "Quality of excessive simplicity or innocence" , "Lack of sophistication or worldliness" , "Inexperience" , "artlessness" .)

I've seen this clue in The Times.

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