I honestly think it was just the author couldnt decide what to do with the child. I mean she gave birth and then the child had at the most 1 chapter at being a baby and then it disappeared? Suddenly 2 years has gone by? I cant say im not disappointed with how the recent chapters have been
I'm gonna assume someone mistranslated since the child was told to be a girl at start then suddenly a boy. ╥﹏╥