User blog comment:The Devil's Advocate WP/Weiss is actually the nicest member of Team RWBY/@comment-18396318-20131002032159/@comment-18396318-20131002035910

Yang totally disregards Blake's presence, though. I mean, she knows that she's there, but she doesn't seem to care that Blake wants her to leave (or maybe she can't tell), and says right in front of her face that she's a lost cause. She's also kinda mean to Ruby, although that's a sisterly thing. She's openly hostile with Weiss, even though she does have her reasons, and she's not exactly the nicest to Jaune. Not that she's mean, but Blake hasn't done anything hurtful to anyone, except state facts to Weiss.

And Weiss snapped at Ruby for good reason. She was trying to prove herself in battle, and while Yang and Blake directly cheered her on, Ruby's first cheer was "Represent Team RWBY!" And, when she's trying to prove herself, it's not helpful that someone keeps giving her instructions. That, and it's distracting. Ruby was backseat fighting.