But on point 3 this is the only one I would not sign out of hand. Vicki might find another partner during the run of the game, but that would be a very side theatre. Maybe mentioned but not more.If you did search, you should ALREADY have the answers.
Anyway,
1) we'll find out.
2) NO and she will NEVER have it.
3) there is NO affair whatsoever and MC's mom will never have an affair with anybody.
4) there is NO harem tag at all.
SINCE THIS THREAD HAS NO HAREM TAG, I GUESS YOU POSTED IN THE WRONG THREAD.