With the negative effects that divorce has on children, are they outweighed if one parent is mentally ill?

My wife has Borderline Personality Disorder. It is hallmarked by continual suicidal attempts, cutting and self harm, unfillable emptiness, often estranged from adult children and those closest to them except husband until divorced, infidelity, mive lying, arrested emotional development to age 3, sees themselves and others as all goo or all bad and fluctuates minute to hour based on moodiness, can mentor predisposed children into becoming borderlines themselves, selfish, never satisfied, always bored, risky activities like unprotected , bulimia, drugs and alcohol, no regard for consequences, trouble forming memories to learn from past mistakes, unstable relationships, borderline crazy, has a facade that handles adult roles that gets a job and you would never believe they are ill. gets worse with menopause which she is approaching. Children have neg. effects from regular divorce, but could it help kids if you remove the borderline as chief mentor, limited custody. Divorce in general can contribute to kids developing borderline personality disorder. Fear of abandonment lifelong is large part of borderline disorder. Divorce = abandonment.She is as stable as she gets while married to me. Divorce could institutionalize her. Thinking of kids, and me, a lot of suffering and infidelity has gone on secretly the bulk of our marriage. her mother was borderline and had MS. Misdiagnosed as depressed for s decade. She wsn truthful about cutting and suicide to her doc.