@SotiCoto Hey, its a manga, what do you expect? Now, if this was an anime that had full-screen drawings of every frame (don't know why I referred to hand-drawn animation so weirdly), then the dress would need to be more detailed, but as it stands, its fine, it suits her quite well, I believe, a simple dress for an outwardly simple and quiet girl.
Also, unrelated, but this manga needs to get the Tagaki-san treatment, or maybe the Delusions chapters are the mangaka's way of doing that.