Female party has high point with intrusion of two knights (3,5)
I believe the answer is:
hen night
'female party' is the definition.
(party for a bride to be and her female friends)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for hen night that I've seen before include "prematch party" , "Bride-to-be's party" , "Bride's celebration before wedding" , "then may the ladies rejoice" , "Pre-wedding celebration for ladies only" .)