I think the author was thinking of introducing a new "Snow Woman" character, but maybe pulled back on the idea. Maybe he thought the harlot side story had run its course and decided to pull back on that and concentrate on the MC/Waifu main story.
Personally, I think it is a good idea if that...
This is great work! Registered just to say that. Love the development and the story so far. Honestly, I am also looking forward to the kids in the future, but don't rush it either.