I have a little sister, and our relationship is pretty acceptable. She is smart by normal standards, and she is the best student in her classroom, though she is very disappointing, mostly because she does not seek perfection. Plus, she is only smart according to normal standards, and doesn't have any unexpected higher intelligence. In addition to that, she spends the majority of her time watching soap operas, instead of doing something creative. What's even worse, is how her minecraft creations are not mechanical at all, she just builds houses and that's it. She even has no idea how to use redstone, even though I spent two hours trying to teach her. She can't grasp the concept of logic gates. I bet she couldn't even teach herself how to perform derivation, jeez.
Ignoring all that though, I still love her, as she is a nice person.