Woman on the river will hesitate (6)
I believe the answer is:
dither
'hesitate' is the definition.
(I've seen this before)
'woman on the river' is the wordplay.
'woman' becomes 'di' (short for Diana).
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'river' becomes 'r' (abbreviation).
'di'+'the'+'r'='DITHER'
'will' is the link.
(Other definitions for dither that I've seen before include "indecision" , "perturbation" , "Confuse" , "Hit red in order to vacillate" , "Hestitate indecisively" .)