"Then I will not make you, and I will respect the claim you are making as to your reasons."

Her declarations that her family was not important and that she needed no one were things out of his immediate scope of understanding- it was far too different from anything on Krypton. It did not mean he was unwilling or uninterested in attempting to understand, but if she refused to answer, then he could not get any further with learning why at this point in time.

Her outburst had already pointed out that despite her insistence that Kal-El was acting as a god, it was not her true reason.