Matt Brigitte has been looking forward to this for, I dunno, years now? So she's there and excited for both of them. She DEFINITELY ate around the world and had her fair share of the drinks available. She wore a nice casual outfit to the wedding and was as social as she normally is.
She did present the couple with wedding gifts:
For Gansey, she made a battle-ready adamantine version of Glendower's sword and went a bit further so that it glows a soft blue color when he's around Blue.
For Blue, she made a pair of mythril axes that, regardless of the picture, have a different words on each (but in Latin instead of Futhark) -- Fearless and Peerless. Like Gansey's hers glow, too. But in a soft salmon color when Gansey's around.