Haha I guess maybe that's why I relate to Haibara so much. She's stingy, too, I guess. I'm both a CoAi and ShinRan fan, and honestly any ending would be fine for me; but as long as Haibara's pain and grief and sorrow is all long gone and so is her terrible past, I'm happy. Just please make her feel safe and feel happiness in the end. Just that, and I'll be happy.
... whenever the end will be.