You were provoking her.
She asked a simple question and you responded acting like a prick. Was it that hard to say, "Not right now, we are doing something else." instead of "No, we are not doing that! Don't try to boss me around!"? Do you feel the need to act superior towards anyone who gives their opinion on what they want to do? I saw no evidence of her being bossy.
And if you hate getting told what to do so much, why didn't you ban/rage at "AJCW". He told you to ban Katie, and you obviously have to take every little suggestion someone gives and assume its a command.
This entire ordeal is you fault.