Stoopidity is also an illness~'s feed

I'm really curious, in the first panels of her showing up it seems like she is in disbelief someone as handsome as Shirayuki is her brother's friend, leading me believe she thinks Haruki doesn't deserve friends like Shirayuki but it shows that she cares about her brother after she realizes how weird and dangerous Shirayuki is. I'm on the fence about this one lol, hopefully she does care about Haruki. Haruki mentioned how his sister wasn't as clingy to him now as she was younger so I'm just hoping it's just a sign of her growing up, not indifference or dislike to Haruki.