Corpse Girl walking through an Ex barrier

She got to the barrier and stopped. Her brow wrinkled, and for a moment she looked like a bad mime working with a wall. “What’s this?” she called over to St. George. “Some kind of force field?”
He nodded. “It’s keeping the exes out.”
Madelyn frowned and leaned into the barrier. “Good thing I’m not one of them, then,” she said.
“I think you can go over it,” he said. “The others did.”
Her pale fingers stretched wide and she pushed harder. Her hands inched forward. She took a heavy step, the movement of a deep-sea diver, and then another. On her third step she stumbled forward and grabbed the side of a car before she fell over. The sword tucked through her belt clattered against the body panels.

Excerpt From Ex-Communication, pg 533-534
Peter Clines
https://books.apple.com/us/book/ex-communication/id635706546