I went back to see what the "recent" chapters were and realized there wasn't too much Hori interaction in the last FIVE MONTHS but, yeah. It's not some hahaha comment. Hori is pregnant and she known for a long time now.
Turns out, according to this chapter, she's even starting to show. Dad remembering how much she's over-eating, which she's been doing a lot of, her need for a bigger shirt to lounge around in, anger to show off she can still fit into smaller clothes (which she can't, directly pointing out belly), dad calling Miyamura to take care of the "Hori problems" that are newer, all the shenanigans around taking control of the family ship and raising and spoiling...on and on.