Dude, In this whole world nobody can take the guarantee of your wife or yourself as next second what she will do and what you will do to her.
But if you are so much unsafe then why are you acting here illogical with emotion........one side you need everything with bond which can't be broken and if broken then she would be sued. My bro......if you have this much doubt then I won't suggest you to live with her. Because no court gives Guarantee ...Lets take example even in Domestic Voilence case where Protection officer comes and see her allright make a report and vanish away and next hour that women might be blown from her husband or any members.(This incidence Iam talking about from the remote areas where urbanization is not there).
So,what you will say as Court has given the protection order,then where is the protection?? as the accused has done his work and protection officer reaches when the scene is over.
So,dude in this matterialistic world no body carries any thing as granted,it's your will to live with her or not. If you have doubt on her ,then better move away don't spoil two lives. As your relationship will be like a spy only where you will not feel as husband rather than detective agency working for unknown reason without satisfaction or remunareation till you won't get divorce.
Now,I will stick to the decision that if you want to give chance then it's on your risk as those legal paper's can only prevent you for some time beings but if you say whole immunity then Iam sorry,there is no legal procedeure to draft ones thought on paper as what he/she will do next second and bind it with Law.
Regards.