@fleuscent Honestly, with this pacing, yeah, it does make her seem stupid. Its understandable, though, since she was basically a sheltered noble lady, completely manipulated by storoni in her PL. So we can definitely say she doesn't even have book smarts. And she has the learning abilities of a normal person too, so its not like she is a genius with IQ or EQ either.
So its quite understandable that she is slow to learning and pretty stupid on picking up cues.
However, the fact that its taking years for her to learn this, does make her seem a bit too stupid, when an average person can probably pick this up faster.
This would be fine, if the author presented it in some way like she has an EQ impairment, but from all intents and purposes on how her character was presented, she should just be a normal, average person in all respects, and an average person with average EQ, should pick up on it pretty fast, not like a male harem protagonist with the density of a black hole.