No, Dave, not a blunder... don't beat yourself up. I think what you got was (in a way) BETTER than if you had ML, because you got some things off your chest, and gave her some info you'd been fretting about for a while. PLUS, you found out (at least you think you did... time will tell) that she's not running for the hills at the thought of twice a week. HOWEVER.... (my take only) it's easy for HER to say (after the fact, when it's too late) that she came up to ML. I may be missing something, but if that was REALLY the case, why didn't it happen? I don't see anything in your post that would have really side-tracked something that was really gonna happen. Sorry, I'm not really trying to pop the balloon, and maybe I really am too jaundiced by my own sitch, but it DOES sound like progress to me (the talk, I mean).
But... I'm confused by her list? How were you being irritating? By talking about your feelings? By opening up and sharing with her? (sorry, I want to type more, but I think I should restrain myself before I say something stupid - is it already too late???)