Wife signed prenuptial agreement

She says I forced her to sign it but I did not. The attorney who drew up the agreement gave a statement saying he saw no duress from me to force her to sign and no statements or questions from her during the singing indicating that she was under duress. Yet she claims she is going to prove in court that it was invalid for that reason. Does she have a chance? I cannot afford to give her half of everything.
I would appreciate responses from readers, even if it is short, OK

Just because she SAYS she can prove it doesn't mean that she can. Regardless, if it bears her signature and it was witnessed, there is nothing else she can do to prove it.

She is getting your goat because you are leaving it in the front yard to graze.