Found an issue with the Locked Hut. It likes to lock itself behind you when the butt growth potions are used and the girl isn't reset. It at least does this at maximum size, which I remember testing. I haven't tested smaller sizes (and documented) yet. After locking itself, you can't buy a new key to get back in nor is there a lock to use.
Would be REALLY cool if your recipe book could handle the To Serve Man recipe, after being completed once. Would make feeding Rose much easier.
It's an alright text based game. I'm not super into weight gain expansion, but for what's available it's pretty good.