i just finished the house in fata morgana but im confused about something

I just finished THIFM which is a beautiful vn and i wont talk about it because if i do i wont know how to stop but theres one thing i still dont understand if morgana cursed mell yuki and jacopo and wished for their reincarnation why did nellie pauline and marie also get cursed and reincarnated? i mean morgana only meant to curse the three men what do the three girls have to do with it?