This may sound like a "So there's this girl...", type of post and truth be told, it might just be one, but bear with me for a moment.

My main plate is a girl a few years younger than me. She's smart, competitive and knows how to use her sexuality. She also has mostly brothers (total of four siblings 3 of which are brothers). They're all older and she's closest to one of them, even though her sister is her twin.

I was thinking about elevating her a step recently but was wondering how such a fraternal influence affects female development in general vs. a sororal one, and whether or not that aids or affects the case for her promotion. As a result I thought I'd post here and see what some users' experiences might be, and whether any trends stand out. Thoughts?