Once a corporation is dissolved, it can no longer conduct any business, including things such as endorsing a check over to a third party. the owner may need to contact the government agency and see if the check can be reissued, or, an authorized person may be able to open an account to windup the business with the deposit of this refund check. I would not allow her to deposit the funds into her personal account unless the bank has documentation demonstrating that she has authority to endorse any future checks.
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What we think, we become.
Buddha