[It's not what he wants to hear, even if it is true. He hates feeling so powerless were his sister is concerned, like he's failed at his self appointed duty of taking care of her.]

I'm sorry. I know I've said it before, but I am for what you've had to go through. The more I hear, the more I can't believe you're as nice as you are. I can't really pretend to know what you're dealing with, you or Wanda. How bad it is. Thing weren't exactly falling apart at home.

[He was the only one ever causing his family frustration back home. Always with things that seem pettier and pettier the more he finds out about his sibling's life.]

I know what you're saying. But I can't just let her take care of me. I'm older, or I'm supposed to be. And she's already been through enough. I'm supposed to be the one looking after her, solving all the problems. It's my job. I've already screwed that up enough.