I sincerely doubt that it's from the US, particularly since it's funding for ETAs. The US cut funding this year by a considerable amount, and ETAs seem to benefit the host country more than they do the US.
The information you're looking for is so program-specific that, unless there is a Fulbright official lurking around this forum, I doubt that anyone here will be able to answer your questions. There is no formula for how things are divvied out.
I know how much it hurts to be so close. I made myself sick over it. My family kept on telling me not to worry about it, but it's hard. But they were right: sometimes the more you want something, the more likely it will squirm and fight to get away from you. So as hard as it is, it's best to be proactive and start working on the next big thing. That was the last thing I wanted to do, but once I did, time went by a lot faster, and I didn't have all that stress to make me sick. I'm sure that your life will be amazing, no matter what happens, because you are determined for it to be so.