Lets her rebuilt refuge (7)
I believe the answer is:
shelter
'refuge' is the definition.
(I've seen this before)
'lets her rebuilt' is the wordplay.
'rebuilt' indicates anagramming the letters.
'lets'+'her'='letsher'
'letsher' anagrammed gives 'SHELTER'.
(Other definitions for shelter that I've seen before include "harbour" , "Shield as from rain" , "'Refuge, cover (7)'" , "Refuge; protect" , "retreat" .)