"The polite answer is 'be idly rich'," she said wryly. "The honest answer is 'be at home with a rare illness, while I handle her day to day living. Siblings, huh? Can't live with them, but you can't just abandon them, either.' She's my half sister. Same father, different mothers, very different circumstances."

There's something that doesn't fit here. The story is so practiced it slides on like a well worn dress, but there's something she's not giving.