HolyHannah, think martyr syndrome, then go back and re-read the OP's posts-
All that self-persecution, the seeking of sympathy from family and friends, then turning up here for yet another injection of "poor you" which she received in litres-
It's evident the brother didn't want to contribute- Upon the death of his father, he created a one dimensional dream man, someone healthy and positive to model himself after, and then took what he might have thought was a camouflaged swat at his sister when he said something about the fathers death was odd-
In essence the post wasn't about his sister, which could be what pissed her off- He didn't extol her martyrdom- So she broke him, to make him smaller to fit her mold-