Maybe her story wasn't planned to play part this big in a first place. We had plenty of background info through the Olga's story, and by the end of an update MC and Grace we really close enough, so I don't think there is something to drag out.
On the other hand, there are still more paths to explore: the big plot with the Rad Maiden, Lina and Risa path, Jennifer (including yandere route) and Fiona, Sakura and her daughter, and, at last, Evelyn story (and her relationship with MC).
I still wonder how Rachel and Evelyn would react if their affairs had been known to each other