Doing as expected of the French, proper, returning with useful tips (7)
I believe the answer is:
dutiful
But I can't explain it at all! Could you help me understand?
(Other definitions for dutiful that I've seen before include "Willingly obedient" , "Fulfilling one's obligations" , "Compliant, obedient" , "to be working properly?" , "Doing what one should" .)