Kell is stubborn, but he's also very weak, and talking tires him. The healers told him he just needs to sleep and let the potions and the spells do their work. But he doesn't want to sleep all the time.

"You think she would?"

Four words and he's not even able to finish a sentence. Kell is willing to try anything that would make breathing - and speaking - easier. He doesn't know Nadine that much, but if Viktor trusts her, than it's enough for him.