Well manga villains (the sneaky, strategic type at least) are usually depicted with slanted eyes, so idk, this one might be up to no good y'all. Either that or she's just asian.
I mean she's already known for throwing a tantrum so is this even a surprise anymore? Plus, fame or infamy, both got people spread the words about the product and trigger their curiosity.
For a man who's supposed to be greedy and into shiny stuffs, would it make sense for the viscount to keep such a crude looking dagger, even display it high and neatly on the wall like that? A bit contradictory, innit?
She might discover some plant that people thought was useless but she knew it can be turned into medicine in her world. Idk. Or she's imba enough to remember what she learnt in biology class.