Yeah, Marina shouldn't be apologizing for some arrogant ogre-like musclehead going berserk. He'd have done it anyway even if she didn't answer him that way. It's on the guild for lacking security to deal with dangerous thugs like that.
I don't know why Nene was written to be this tardy character, being late doesn't make her seem more cute or endearing to me. We could have also skipped the entire scene with the ogre-like bastard if she wasn't late. If that was a gag, it fell flat for me.