She's made a rash move! (5)
I believe the answer is:
sarah
'she's' is the definition.
'a rash move' is the wordplay.
'move' indicates anagramming the letters.
'a'+'rash'='arash'
'arash' with letters rearranged gives 'SARAH'.
'made' acts as a link.
(Other definitions for sarah that I've seen before include "Girl" , "- Bernhardt, Fr. actress" , "Abraham's wife in the Old Testament" , "Girl's name" , "Abraham's wife (OT)" .)