Her maid's upset when not properly understood (8)

I believe the answer is:

misheard

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'her maid's upset when not properly understood' is the definition.
I can't tell whether this definition defines the answer.

'her maid's upset' is the wordplay.
'upset' indicates anagramming the letters.
'her'+'maids'='hermaids'
'hermaids' is an anagram of 'MISHEARD'.

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(Other definitions for misheard that I've seen before include "wrongly caught" , "Picked up by inattentive" , "Chinese whispers are usually" , "as was 1d [KISMET] by Hardy?" , "Picked up bad" .)

I've seen this clue in The Irish Times.

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