I'm 39, a gentleman never discloses his ladies age.
She handles taxes, I handle day to day. All financial accounts are tracked in Quicken, which I have attempted to familiarize her with. She isn't interested in the day-to-day of how I do things. She used to pay the bills, and has a firm grasp of the basics regarding our set-up.
I am an indexer, and there is a spreadsheet laying out the allocations I follow. She has not shown an interest in learning more about this side of our finances.
All passwords are physically written down, and maintained in a known location.
We go over our total financial picture a few times a year.