Perhaps you are asking the wrong question. A more effective question is "what happens to a business when one of the owners gets divorced?" I have no knowledge of this area, but I'm sure there is a ton of info on the internet.
I'm sure the answer largely depends on your business structure. For example, a corporation is a separate entity from your personal finances and there are really no owners, just shareholders. So in this case your wife may only be able to take shares.
If you don't have a corporation or haven't created any other the other business structure then any money you make is dealt with by a schedule C which makes you a sole proprietor. This money goes into the "marriage pot" and your wife would be able to hit this the same as the rest of your finances.
Best advice, talk to a lawyer and an accountant. ;)