Corpse Girl used to have muscular dystrophy

I watched her try to keep her balance and tapped my fingers against my leg. One of Christian’s odd muscle memories that shows up now and then. “You were sick when you were little, right? Muscular dystrophy or something? Your dad would mutter about it now and then after I killed you the first time.” She teetered back and forth, trying to fight the questions. “He did something to fix you, didn’t he?”

Excerpt From Ex-Purgatory, pg 575
Peter Clines
https://books.apple.com/us/book/ex-purgatory/id676938479