She thinks this promotion means she might get to see at least one of the family members from whom she was abruptly separated years ago, but actually what it means is that, since Merlin's gone, she is now Vivarin's errand-witch, duties including schlepping out to ferry visitors across the Lake. On the Flashback Canoe, she deludes herself into thinking that she's going to pick up Arthur, and when she sees a young man standing there, she's quite excited. Her fervor doesn't fade when the guy, who is Michael Vartan, who is really just very good-looking, tells her that he is not Arthur but in fact Vivarin's son Lancelot, making him Margulaine's cousin. She is all doe-eyed and attracted to him, and open-minded about the whole cousin thing (by the end of all this, she'll think marrying your first cousin is the height of Martha Stewart-type respectability). It occurs to me that Margulaine hasn't seen any men besides the weird guys who row the boat for like twenty years now. Also, I decide that Julianna Margulies is a good actor and I am going to overlook the accent thing. I can't help the fact that she's eminently likeable in this movie. Lance gives her leave to embrace him, which she can handle, for she is all on his jock right now.
Vivarin wants Lance to stay at the Collective for some reason, something having to do with him learning to be a better leader by weaving his own clothing from flax or mastering the pan flute, but he thinks he would be a better leader by going out and, you know, leading. The gist of a very long argument is this: Vivarin wants Lance to stay and learn. Lance wants to leave and fight. Margulaine wants to take Lance upstairs and blow his mind. Vivarin suddenly and for no reason at all yells at them both to get their asses to Fauxhenge, as though she can't stand to look at them anymore. Margulaine, moving very quickly, grabs Lance, throws him over her shoulder, and takes off at a run. It is unclear if this is because she is scared to death of Vivarin and knows that if she says leave you should leave, or just because she wants to go party down with Lance. They run around the tiny Avalon set laughing, holding their skirts high as they chase each other up and down the staircase to make it look like they have to run really far to get to Fauxhenge.
I guess they left out the drug scene that logically goes next, because the stuff that happens now is really weird. Lance is talking mad theory about Fauxhenge and how he can feel "the Ring -- flowing through [him]" and being generally trippy, and Margulaine is pretending to be stupid so boys will like her, and lies about how she can feel it too, and posits that it's because they are related. Which -- okay, if I were trying to get a boy to go to bed with me, I would stay away from danger spots like that. Just a tip. She points at the Glastonbury nuns walking down the hill, and Lance asks if the nuns can see them. I am confused, because he and Vivarin both talk like he's spent at least a little time at the Womyn's Collective, but then, like, he doesn't know about Fauxhenge or all that Mist nonsense. So Margulaine explains about Glastonbury and the Collective (again!) and how the nuns don't even know it's there, but because she was not raised to be flirtatious, she doesn't use any of that "behind, beneath, deeper in" talk, which would subconsciously cause Lance to do her right there in Fauxhenge, I bet.
Look, there's Gwenhwyfar, the nun who does as she darn well pleases, and she senses something. She senses that her name is a wicked pretentious way of spelling the identically-pronounced "Guinevere," but also she senses these two cousins in Fauxhenge. Lance asks Margulaine to drop the Mists for a second so he can hit on Gwen, but she doesn't want to because it's not a parlor trick (parlors haven't been invented yet) and she takes her responsibilities very seriously, and he is so immature. Then he says he figures she probably can't even do it (even though he just saw her do it, when she picked him up). Even the strongest, most responsible and powerful priestess has her breaking point. Lance has found Margulaine's. Because of course now she has to do it. Because she's a six-year-old.