She is small and cute in stature so no one took her seriously.
Why do you judge her in that way? By the way, Napoleon was small, but he commanded an army.
She's like the little sister I never had, so cute!
Even if you consider her to be like a sister, it's rude to judge people based on their size. It's not fair to judge people based on size.
I don't care how you feel about me judging her, I just want her to do better and not mess things up like I did.
Maybe you should teach and guide her how to not mess up. Since she is like your sister, you should want the best for her and help her improve herself so other people will start to take her seriously. If she is respected, then you will also feel respected.