It's honestly not a challenge. He just wants to know what she knows. What she can do. Anything that might be a clue as to who she is (what? she is?) and where she's from.

"I'd tell you how many I know, but no one likes a bragger."

The answer is five, fluently, plus bits and pieces of two more. But none of that will help him gain Wolverine as an ally-- and he's already decided he'd rather have her as an ally than an enemy. Nowhere in his mind does the word 'friend' filter in.

"Tiene un nombre? Besides Wolverine or 'claws'?"