She’s a good example in revolution around energy and style (4,5)
I believe the answer is:
role model
'she's a good example' is the definition.
'revolution around energy and style' is the wordplay.
'revolution' becomes 'roll' (synonyms).
'around' means one lot of letters goes inside another.
'energy' becomes 'e' (physics symbol as in E=mc2).
'and' is a charade indicator (letters next to each other).
'style' becomes 'mode' (synonyms).
'e'+'mode'='emode'
'roll' enclosing 'emode' is 'ROLE-MODEL'.
'in' acts as a link.
(Other definitions for role model that I've seen before include "One looked up to" , "A worthy person" , "someone to look up to" , "exemplary type" , "good example to follow" .)