I'll speak to point two since I'm most recently guilty of it:
First, I'm sorry if Artie's semi-new aggressive RP is offensive or overly antagonistic. However, between the choices of Harano, leaving the sept or being an asshole for a little while as she works out her frustration, I think that being an asshole is the way to go so she can work through it and return to being the tiny little annoyance she usually is.
Given that, it's well within the actions of my PC to walk out on a conversation in which she's not contributing anymore. If a character wishes to respond to one of Artie's "hit and runs" all said PC needs to do is post that they'd like to respond. Artie may be an asshole, but she's an honest one, and will give people their say.
Also, if you're the unfortunate target of some rough play, as a player you are welcome to ask me, player to player, to stop. I will respect it. The MES encourages player comfort.