Cade has been using his bow as well, the one weapon he's allowed to have (and maybe kind of probably just snuck away from the armoury since it's his after all), and has been standing at Beleth's side while both of them shoot at serpents and try not to scream.
When she starts removing her shoes he's caught by a surge of panic, and grabs her arm with a yelp of "BELETH NO!"
It's quickly interrupted by Iskandar urging her on, and Cade looks at the man like he's insane. Which... he kind of is. As far as Cade's concerned. DO YOU SEE HOW SMALL SHE IS