Filing my deceased mother's taxes. She had a trust & I opened an account for the trust after she passed. Do I deposit her refund in the trust acct or her personal acct?

She had a personal checking account with a small balance in it. I am not a signer on this account and at some point I need to get the funds out of that account but does it matter if I have the refund deposited in the trust account I opened or do I need to put it into her personal checking account?