Absolutely shocking and terrible news. It was subtly mentioned that Kumiko had an illness or health-related issue in a previous thread, but I never gave it a second thought. She certainly never mentioned it in casual conversation or displayed it in her actions or wanted any sympathy. I knew her as a regular girl. She shopped, travelled, played sports, and had a good attitude. She did put mayo (?) on her grilled cheese sandwiches, though, which is pretty twisted to me.
I think it's pretty special that there could be such a divide between her lively online persona and her real world problems. RIP, Kumiko. I wish I knew you better and I wish I had your strength, passion, and perseverance.