Joanie, weaning is very emotional- especially when it's unexpected or sudden. Even when you plan to wean or come to it naturally, it causes all sorts of emotions to bubble up and your hormones start to balance out again, causing a swing in the other direction. It is an end of a relationship, an acknowledgement that your baby is growing up. Top all this off with your weaken state form the illness and sleep deprivation and, well, you've got a real roller coaster of emotions. This is why so many of us say it's bittersweet. But, you're right, Sora will be okay if this is it.
But, again, I would not give up. If things are still just going through you, your body is probably having difficulty producing any volume of milk. But the fact that you still got some, means it's still there. If it were me, I would keep at it. I would keep offering the breast, frequently. Keep switching sides as she pops off. I would also pump periodically throughout the day. Keep up the tea, oatmeal (if you can), fenugreek, and any other suggestions on this site: http://kellymom.com/bf/can-i-breastfeed/herbs/herbal_galactagogue/
You might be surprised that once your body has healed that your milk steadily increases with your efforts. I mean, even adoptive mothers can sometimes get milk to flow. It will likely take some work on your part and you may not feel up to it right now. That's the tough part. But I really do think you'll be grateful that you tried.
Follow Mothering