I agree w/ ur cousin. however, instead of bank statment, you and your cousin shoud have provided your refinance lender a LETTER from lender for student loan stating "loan is satisfied".
it is your refinance, not your cousin's. so your cousin is right.
这不是自私不自私的问题,关系到隐私权。 这是在米国, 应该不难理解。
好事多磨。 退一万步,不成的话,接着打猎。
祝你好运!