Set adrift, Papa married different person – her? (10)

I believe the answer is:

stepmother

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'person her?' is the definition.
I can't judge whether this defines the answer.

'set adrift papa married different' is the wordplay.
'adrift' indicates an anagram.
'papa' becomes 'p' (phonetic alphabet: alpha, bravo, charlie etc.).
'married' becomes 'm'.
'different' becomes 'other' (similar in meaning).
'set' anagrammed gives 'ste'.
'ste'+'p'+'m'+'other'='STEPMOTHER'

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(Other definitions for stepmother that I've seen before include "Relative by a further marriage of one's father" , "Unnatural parent" , "Wicked character of fairy stories" , "Stereotypically wicked member of 3" , "not a natural parent" .)

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