This is pretty darn good. The female lead is a bit of a completely unaware, crazy weeb at times, but the story doesn't milk that or rely on that, because there's bigger overarching plot points like the mystery and the family dynamic. And besides that, she has good parts alongside her childishness. There's a bit of an overdramatic melodrama aspect to the story, but it's better than those stories that aren't particularly bad anywhere, but just don't have a hook anywhere that's particularly good.