Here, you're in collision with a woman (6)
I believe the answer is:
hither
'here' is the definition.
(I know that here can be written as hither)
'collision with a woman' is the wordplay.
'collision' becomes 'hit' (synonyms).
'with' is a charade indicator (letters next to each other).
'a woman' becomes 'her' (her refers to a woman).
'hit'+'her'='HITHER'
'you're in' is the link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for hither that I've seen before include "Hit her, being towards this place" , "so far" , "Here (arch)" , "Formally, towards this place" , "To this place of old" .)