We are found within her chopper (5)
I believe the answer is:
hewer
'chopper' is the definition.
(I've seen this in another clue)
'we are found within her' is the wordplay.
'are found within' means one lot of letters goes inside another.
'we' put within 'her' is 'HEWER'.
(Other definitions for hewer that I've seen before include "cutter" , "Axeman" , "Person cutting (wood, say) with blows" , "Nick" .)