I'm feeling very much at peace about the grad school thing now. After the initial surprise and feelings of futility, I realized that I was indescribably relieved about this particular situation. Yes, I'd like to teach, and maybe that's in my future. But if not, I'm perfectly fine with that.
It's funny how plans happen. You start making them when your life is in one place, and then you follow them for a long time, regardless of the many, many subtle changes that occur along the way. Sometimes, those changes aggregate into something monstrous that makes your plan painful to carry out, but you stick to it anyway because it's The Plan.
At any rate, I'm happy and peaceful. It's another beautiful day, and I am blessed. :-)