"Do you feel he's met every obligation of a father, and any other promises he might have made? More succinctly, do you fully trust him?"
Chan had seen several facets of the wolf himself, good and bad. It was Isla's opinion, whether or not she felt Adelard had done right by her, that would add the final, deciding weight to the scales. Perhaps she'd feel it was overstepping to ask such a thing, maybe she'd even be right, but still he felt it was worth asking. If things could be a little better between himself and a pack mate, why not?