The Crate in the Parking Lot
Ximena did, and Odile did, from the other end of the hall, through an open door, which is the entire reason any of this went the way it did.
What happened, as best I have been able to put it together from three people, is that Willa came out of the bridal room to find somebody, and Maren was in the corridor because she had been looking for a restroom and had got turned around, and the two of them ended up eight feet apart.
It lasted about three minutes.
There was no embrace.