I wonder if the sister realizes how much her brother dotes on her. Sure, he's not huggy or what not, but everything she asks for, she gets. She might not get it exactly how she wants it, but he sure gives it to her to the best of his abilities.
Girl, you should be thankful to your brother. Older brothers the world over regard it as their God-given right to torment their little sisters. God knows I'm tired from shouting at my son about that.
But yeah, they're sweet together.