Jennifer,
AS has been mentioned, backup your database to an external drive (Segate, Western Digital, or similar) and put one drive in a safe-deposit box, or a fire safe if you don't trust your local bank.
http://jungledisk.com/personal/ offers a very inexpensive hosted & encrypted backup that starts low, just make sure and write your encryption key down somewhere if you choose to use a private key as well. Very low-effort for users, and would give some additional piece of mind if you are so disposed.
If you need some help in tackling the logistics of archiving your data, just send me a PM, and I would be glad to lend a hand.
I'm praying for you as you walk through this.
