Hindu queen managed India (4)
I believe the answer is:
rani
'hindu queen' is the definition.
(I've seen this before)
'managed india' is the wordplay.
'managed' becomes 'ran' (I've seen this before).
'india' becomes 'i' (phonetic alphabet: alpha, bravo, charlie etc.).
'ran'+'i'='RANI'
(Other definitions for rani that I've seen before include "Indian queen" , "Rajah's wife from Iran" , "Wife of a rajah" , "Wife of a raja" , "Royal Indian female" .)