She gives work to ambassador over rising trouble in Hamlet (7)
I believe the answer is:
ophelia
'she' is the definition.
'work to ambassador over rising trouble in hamlet' is the wordplay.
'work' becomes 'op' (short for opus).
'to ambassador' becomes 'HE' (His or Her Excellency).
'over' says to put letters next to each other.
'rising' is a reversal indicator (in a down clue, letters go up).
'trouble in hamlet' becomes 'ail' (I can't justify this - if you can you should believe this answer much more).
'ail' backwards is 'lia'.
'op'+'he'+'lia'='OPHELIA'
'gives' acts as a link.
Can you help me to learn more?
(Other definitions for ophelia that I've seen before include "Laertes' sister (Shak.)" , "Daughter of Polonius (Hamlet)" , "Drowned Shakespeare heroine" , "Shakespearian suicide" , "girl in play" .)