A contract can be invalid if it is sprung in a way that does not give the other party time for "due consideration". Two days before a wedding wasn't enough time to get her own lawyer to go over it.
Then she was a fool to sign it!
"Honey, if you're springing this on me now, I want to push off the wedding until next week so I can think about it. Forget about it, and we can still get married the day after tomorrow. Force the issue, and I'm not marrying you."
Not too hard unless you're a money-grubbing skank.
>>Two days before a wedding wasn't enough time to get her own lawyer to go over it.<<
Most people sign the contract to purchase a home on the day of closing.
But trust me, it wasn't "sprung" on them...