Unfortunately, the family laws in Florida are among the worst in the country for this sort of thing. Infidelity can only enter into the equation when it comes to custody (or alimony, to the extent that you might be able to show that OM is providing "support" to her financially), and once a marriage is considered "long-term" (15+ years), the alimony can be PERMANENT unless the wife agrees to something other.
We've been married for 22 years.
I know what you're saying about showing her the financial stuff, but I'm really not of the mood to be educating her right now. She needs to learn this stuff for herself.