prophecy

hi y'all I will predict this story. I'm still at chapter 44, I believe that the dukes sister is the mother of arelyn and the duke is only his uncle. The dukes sister entrusted fmc to him before she was forcefully married because she doesn't want her to suffer and later on the dukes sister will return and will reveal everything, as for the father of the child I suspect that it may be a commoner or an aristocrat that have died. this is all just speculation but never have I ever failed to prophesize a manhwa before ヾ(☆▽☆)