Blaze looks about to speak for a moment- then looks away, temporarily stumped. She is grateful - Hughes' opinion means more to her than her tendency to argue with it might suggest. She just doesn't know how to convince him of that. She doesn't entirely understand what she ought to reassure him about, never mind what to say.

She does know the answer to that last part.

"Trust me, Hughes. You'll know the day I do." She meets his gaze again as she speaks Shrugs at him. "I don't understand what you're suggesting I do. Give up on becoming more than a fledgling? Stay in this holding pattern? The Light needs to grow. I need to be stronger."