Fair enough that she shagged Charles after the first wedding. The "are we engaged now?" joke wasn't funny, but still.
To then shag Charles at the second wedding while only just engaged to Scottish bloke was poor.
Inviting Charles to her wedding post-shag was iffy.
To then take Charles wedding-dress shopping and tell him about previous shags was shit of her. Plus she had a really expensive wedding-gift list and we all know how entitled that is.
To then have the audacity to attend his wedding when he's told her he loved her, AND to tell him moments before the ceremony that she'd left Scottish bloke - that was just cow-like behaviour.
Her only redeeming feature is that she had good taste in hats. I'm right, aren't I?