Mostly, I would have to say Nathanh is demanding and impatient - he wants Thianna to do what he wants when and how he wants. But as Thianna has gotten better at expressing herself and become more sure of herself she doesn't want to just do what he says and this causes a rift. However, Nathanh and Thianna both know that he needs her. Thianna is brave, she will go down to the basement alone, Nathanh will not. So when he wants something that is in the basement he needs Thianna to accompany him downstairs. And this gives her power!
It is not all Nathanh though. Thianna definitely knows how to push her brother's buttons. To get him really mad all she has to do is ignore him and not answer him. Or if he is not playing with her she will quickly dash into his room, touch a piece of Lego and run back out. Then the chase is on!
But honestly, most of the time they get along well, play together, and miss each other when apart. Nathanh always beams a little bit when he gets to introduce his sister to someone. Somebody (rather inappropriately) asked me if they were brother and sister (meaning biological siblings) the other day. I tried to quietly answer the question but Nathanh heard me and rushed in with "yes we are." I also get asked a lot (and by a lot I mean about twice a week) whether they are twins. I just say "no, he is short and she is tall. Talk to them and you'll quickly notice a difference." Which is all true. I think this is kind of funny because although their height is fairly close, they really do not look alike. Nathanh is skinny and has a very dark skin tone and Thianna is much bigger and has a light skin tone. They weigh the exact same though!
Here are some Nathanh and Thianna pictures.
So really I think they are pretty good friends.
