Zsofia can get pregnant once you give her the red outfit in the cemetery
Gwyneth won't let you get a chance to impregnate her before that... so not really a point from my point of view?
Again she won't let you impregnate her before.
Pretty much these Events are required to reach a point in the relationship that the girls like the MC enough to let him become the fathers of their children... in that regard you also need to bring Rosy the key in order to let you fuck her.
Witches are human and can be quiet lookers... their magic is useful in many ways... they still have been persecuted and exterminated when ever possible, even in Peasant's Quest
Meh who cares about that... the MC admitted to have lost his virginity to the genitals of a sheep dureing the start of the game