You're right, you don't owe her anything. Or yourself. Just stay home with clenched fists and stay angry about it. Be sure to have some aspirin handy in case you have a heart attack.
Call me crazy, but just for fun, you could try a mental experiment: imagine for a moment that she is in fact a deeply wise and loving person, and she was at that time doing just the right thing to teach you perfect patience. Just saying, neither you nor me can prove it true or false. Just saying, you know, it's a way to look at it.
By the way, that's a gorgeous picture on your blog. Makes me want to go travel.