Privacy Laws prohibit banks from disclosing any information on accounts without written permission from the account holder. (In your case, that's obviously impossible.) They also cannot offer legal advice on how to access someone else's accounts. Which state do you live in? Arizona is a community property state in which all property accumulated during a marriage, except that acquired by either inheritance or gift, is considered "community property." Several other community property states also have the same statutes, depending on where you live. Regardless, it still might be worth a phone call to an attorney in your area (many offer free preliminary half-hour consultations , sometimes even via telephone) who can help translate banking paperwork with you. Good luck.
Added 7:22 PM: If you wish to contact me via private message, I would be more than willing to offer some assistance. I am well-versed and federally licensed in the financial industry and may be able to help 'translate' or assist you with questions. Ours is a sometimes cold and unfeeling industry and we're often impossibly tied up by federal regulations, but there are still a few individuals on the 'inside' that will voluntarily step in and help with procedure, if we can.