Yeah, that's weird. But these are people that you'll come to really know and stuff so it won't be. Some of them, I already know and would have no trouble referring to them as brothers. <3 Even the girls are brothers though, just thought I'd add that in. :P
Mine was so-so, I'd say. It's been so long ago it seems, haha.
Eh, she doesn't really look at anyone like that unless they're mean to her or they bother her. She seemed fine when we were playing with another girl one time, but I think she was kind of mad, because she was playing with me first and the other girl just randomly joined in. If she's anything like me though, she'll end up alright. It just takes some time. :)