After Pervert gives you the first set of schematics for bullets, he says come back in 2 weeks time. It might be useful to add a reminder to the calendar. As it is, I made a note of it on paper and a save game named "Dark Mansion on day 135".
With regards to talking about the Kingdom's finances, Emily may want to mention another factor in limiting Camelot's ability to find things is the fact that aliens have invaded and thrown the world into absolute panic. Demonstrating her knowledge of markets is all well and good but it fails to mention the elephant sitting on the world economy.
On another note, if you go deeper into Fia's character, you might want to describe the basics a bit more. For example, I initially thought she was a were-creature which led me to ask how she was still alive - much less looking like Katie's younger sister - given that she's a grandmother. Looking on the wiki, I see she's an Enchanter which explains why she doesn't have the shortened lifespan. When I do another playthrough, I'll pay more attention to when she's talked about and see if you do cover it sufficiently and I'm just bad at reading comprehension.