Hello, Saddad, and welcome to the Depression Forum,
Your wife clearly needs to see a psychiatrist to have a diagnosis made regarding the type of depression she has and which medications are most likely to be of help in bringing the brain chemistry back into balance.
This illness is scary, in my view, although Marie Curie said "nothing is to be feared; it is only to be understood". The problematic things relate to the children's damage psychologically and to the damage to your own psyche. I would guess that psychotherapy is needed for the whole family. And the poor dog needs to be outside every day for at least a long walk in the sunshine.
Take care of yourself now, first, and make sure that the children get the proper help to restore their sense of identity and enjoyment of life. Be strong in insisting that your wife get psychiatric care right away.
I'm thinking that the illness doesn't get better unmedicated and she definitely needs that as well as verbal therapy.
Post Edited (It's Genetic) : 4/2/2012 8:32:25 AM (GMT-6)