Society girl bankrupt finally — because of this? (4)

I believe the answer is:

debt

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'this?' is the definition.
The definition suggests a singular noun which matches the answer.

'society girl bankrupt finally' is the wordplay.
'society girl' becomes 'deb' (I've seen this before).
'finally' suggests the final letters.
The final letter of 'bankrupt' is 't'.
'deb'+'t'='DEBT'

'because of' acts as a link.

Can you help me to learn more?

(Other definitions for debt that I've seen before include "Something owed" , "The state of owing something" , "Financial problem?" , "Amount owing" , "state of obligation" .)

I've seen this clue in The Times.

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