Velanna comes to her and Merrill tucks in close, arm still tight around her midsection. They just have to get through this. They can survive for that long. She can cast for that long.

She's going to have to, especially with two of their healers in bad shape.

One more Crushing Prison, to keep Vengeance enclosed while elements roar around them. Velanna will keep her safe; Merrill just has to keep doing her best to make sure everyone else is safe, too. Far easier to focus on that than on the pain and the blood and the screams.