I saw the raws too, but since I don't understand a word they are saying, I would like to know if I'm wrong. Rain
Well it looks like the prime minister really is her father, cause there’s a flashback of what happened with the cousin and the cousin appears (looks exactly the same but more mature). I think you were confused about the prime minister being her dad, because he still looks so young.
I have a theory that the prime minister is her cousin. I might be wrong though... http://www.mangago.zone/read-manga/this_is_an_obvious_fraudulent_marriage/nbt/mpn_chapter-2156552/pg-23/