She upsets Diana (5)

I believe the answer is:

nadia

'she' is the definition.

'upsets diana' is the wordplay.
'upsets' is an anagram indicator.
'diana' anagrammed gives 'NADIA'.

(Other definitions for nadia that I've seen before include "Name of girl" , "___ Comaneci, Romanian gymnast" , "___ Comaneci, Romanian-born American gymnast" , "Foreign woman" , "Miss" .)

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.