She turned everything round inside (4)
I believe the answer is:
lola
'she' is the definition.
'turned everything round inside' is the wordplay.
'turned' is a reversal indicator.
'everything' becomes 'all' (I've seen this before).
'round' becomes 'o' (round can mean a round object**).
'inside' means one lot of letters goes inside another.
'all' enclosing 'o' is 'alol'.
'alol' back-to-front is 'LOLA'.
(Other definitions for lola that I've seen before include "Whatever -- wants (song); -- Montez, mistress of Ludwig I" , "song by 4 [THE KINKS]" .)