Escaped from aides-de-camp with the help of the Big House (4)

I believe the answer is:

maid

I'm a little stuck... Click here to teach me more about this clue!

'help of the big house' is the definition.
'maid' can be an answer for 'help' (thesaurus). I'm not certain of the 'of the big house' bit.

'escaped from aides-de-camp with the' is the wordplay.
'MAID' is hidden in amongst the letters.
However, I am uncertain how this is indicated.

Can you help me to learn more?

(Other definitions for maid that I've seen before include "One in service" , "daughter?" , "Female servant - young girl" , "- - -of-all-work" , "Serving girl" .)

I've seen this clue in the Irish Times.

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