my daughter co signed on a house how will bankruptcy affect hr

If you inted to let the house go in bankruptcy, the lender will go after her for the house. However if you are going to keep the house, there should not be a problem.

Co signers on notes are equally responsible for the debt.  If the other co signer does not pay, then the creditor will look to your daughter to make the payments.  The debt will be discharged in bankruptcy for the person filing, but not the other party, unless they too file for bankruptcy.