Raised issue with party girl: when does she sleep? (7)
I believe the answer is:
bedtime
'when does she sleep?' is the definition.
(bedtime is time to sleep)
'raised issue with party girl' is the wordplay.
'raised' is a reversal indicator (going up in a down clue).
'issue' becomes 'emit' (both can mean to give out or radiate).
'with' says to put letters next to each other.
'party girl' becomes 'deb' (I've seen this in another clue).
'emit'+'deb'='emitdeb'
'emitdeb' in reverse letter order is 'BEDTIME'.
(Other definitions for bedtime that I've seen before include "when one's due for retirement?" , "The hour for sleep" , "When to turn in" , "when story comes out?" , "When someone retires" .)