I think you did fine. It *was* an emotional day, and anyone going through something similar would have felt that that way.
As for her invitations, accept them so long as it doesn't interfere with your GAL or your PMA. I still see the possibility of reconciling for you two, so try your best to ignore the bad and encourage the good.
BTW, I am certain that your W was coached on how to act and what to say in the mediation. Mediation is not the time or the place for her to look out for *your* interests, or you for hers. Mediation is for you both to state your *own* needs and wants as clearly as you can so that hopefully some agreements can be made. If you were focused on HER needs during mediation, well - stop.
The trouble with having an open mind is that people put things in it.
My sitch - Divorce Busted! http://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=1804137#Post1804137