I don't like Separation Agreements. Many would surely disagree. In my view, Separation Agreements are not always that easy to enforce. It is much better to have a court order, especially if you seek to enforce a parenting plan. While the provincial government has a government agency mandated to enforce support orders, no similar agency exists with respect to enforcing parenting provisions. So, I don't like Separation Agreements.
It is a challenge at the best of times to achieve a legally enforceable spousal support separation agreement with a former partner/spouse. Is it legally possible to achieve an enforceable "air tight deal" when the former partner/spouse is mentally ill? We say: "unfortunately - no".