Then get divorced.
Then call the police or let it go. Your call.I have evidence that my wife assaulted me.
And you will try to get away with paying her as little as possible. This is the usual nature of such things.She has said she will try to get as much alimony from me as possible.
So ... you intend to commit the crime of extortion? Really?If I use the threat of turning in the evidence of assault to the police as an incentive to get my wife to waive spousal support, and she signed such a contract, would it be deemed valid if the judge knew why she signed it?
Her battery against you should be of no consequence to the consideration of support.Or would it be better to turn in the evidence now - which means she may get arrested and I lose it as a bargaining chip - with the hope that the judge takes it into consideration when calculating spousal support?
If you want her punished for assaulting you, call the cops. Of course, the "evidence" you have may be nothing of the sort.
What sort of evidence do you think you have? And how long ago did this occur? If it occurred weeks or months ago, the police and the court will see it for the payback ploy it would be.

