Questions woman's legal arrangements (9)

I believe the answer is:

distrusts

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'questions' is the definition.
(distrusting is a kind of questioning)

'woman's legal arrangements' is the wordplay.
'woman's' becomes 'di's' (Di is short for Diana).
'legal arrangements' becomes 'trusts' (I can't explain this - if you can you should give a lot more credence to this answer).
'dis'+'trusts'='DISTRUSTS'

Can you help me to learn more?

I've seen this clue in The Daily Express.

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