They seem to have a mutual disrespect for the other's intelligence. The beginning of any good business relationship. But he's taken aback by Jack's need of collateral. Damn clever of him really. Especially since the selkie has no intention of granting wishes. However, he's waved off for the planning. Fine with him until he can figure out how to get out of that.
"He always says 'spoedig, huisdier'." Black eyes stare into brown for a bit before he gets the hint and translates. "...'Soon, pet.' I don't want the shinies, Jack. Just my skin and my freedom. I want to go back to the sea instead of this-" The ship creaks in protest and he hugs himself, trying to calm. Jack doesn't seem to grasp the situation and he doesn't know what to do.
"If you don't get me free soon I'll sink this ship and all of us with it."