Lass in evil misbehaving? (10)

I believe the answer is:

villainess

'lass in evil misbehaving?' is the definition.
I can't tell whether this defines the answer.

'lass in evil misbehaving?' is the wordplay.
'misbehaving?' is an anagram indicator (I've seen 'misbehaving' mean this).
'lass'+'in'+'evil'='lassinevil'
'lassinevil' is an anagram of 'VILLAINESS'.

I've seen this clue in The Guardian.

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