Cairax can see Corpse Girl

Cairax Murrain lashed out with both arms and dozens of exes went flying. The barbed tail skewered three and shook them off. It reached up and seized the dead woman who’d wrapped herself across its eyes.
“Stealth!” someone shouted.
The cloaked woman turned. So did Cairax Murrain. Captain Freedom slumped on a car near Madelyn. She was on the roof, holding the sword over her head.
The demon’s saucer eyes squinted as if it was trying to focus on something. Then it snarled.
It could see her.

Excerpt From Ex-Communication, pg 567
Peter Clines
https://books.apple.com/us/book/ex-communication/id635706546