pity the situation your brother is going through. But why do you people have to wait for 3 whole years before discovering that she has mental issues before.
Psychiatric hospital is the best solution for her . And nobody need to stay with her there after all the money for treatment has been settled.......
There's no need to divorce her in her situation now as she's not of sound mind....and all this church deliverance stuff is just time wasting cause that's not the solution to her problem.....
May God see your brother through this period