Move into a role possibly seen as melodramatic (13)
I believe the answer is:
overemotional
'melodramatic' is the definition.
(thesaurus)
'move into a role possibly' is the wordplay.
'possibly' is an anagram indicator.
'move'+'into'+'a'+'role'='moveintoarole'
'moveintoarole' anagrammed gives 'OVEREMOTIONAL'.
'seen as' acts as a link.
(Other definitions for overemotional that I've seen before include "Showing excessive feeling" , "Move alien root (anag.)" , "Showing excessive feelings" .)