Not all literature (or art) has to be straightforward. I personally enjoy the fact that her works give these glimpses into the characters feelings/memories/struggles, in a slice of life way. Feels more relatable, common, normal, than a simple introduction > build up > climax > ending (> epilogue) kind of deal.
Yume is the best one, she's an asshole regarding relationships, but I want to see her find peace with herself.