My wife is in the mental hospital, and I am not going to let her come home. Can I ever let her back into my life?

My wife is in the hospital after a drug overdose trying to kill herself.

She cannot handle her own life, and I cannot live with her any longer.

I cannot be her caretaker, and I cannot keep her safe.

She may go live with her dad, or to a respite home (If anyone knows anything about these, I could use some info about it).

Has anyone experienced anything similar, and was your spouse ever able to prove they were capable of handling their own life? I thought my wife was on the road to improving her chronic depression, but I was woefully mistaken it seems. Will I ever be able to trust that she isn't hiding the fact that she wants to kill herself?

Is there anything I should think about, find out about, or consider in my current situation?