She confuses people about a couple of points (8)
I believe the answer is:
penelope
'she' is the definition.
'confuses people about a couple of points' is the wordplay.
'confuses' indicates an anagram.
'about' means one lot of letters goes inside another.
'a couple of points' becomes 'ne'.
'people' anagrammed gives 'pelope'.
'pelope' going around 'ne' is 'PENELOPE'.
(Other definitions for penelope that I've seen before include "Girl's name" , "Waiter" , "Ulysses' faithful wife" , "girl" , "Wife of Odysseus or Ulysses" .)