Hi defeated. Sounds like it is time to start taking care of yourself. Getting a therapist and psychiatrist can be a beginning to dealing with depression.
If your wife will go on meds and get a therapist instead of dumping all her stuff on you, it will make both your lives easier.
Dealing with parents is never easy but it sounds smart to sanitize what you tell your mother so her anger is not bigger than it is.
You need another team member. Try getting 3 more posts by Thursday night at 9PM EST and you can visit the Depression Chat in the chat room. Wednesday is anxiety chat 8PM EST. But you need to reply to other posts or create your own so you have at least 5 posts.
You can also be an active member in other ways like supporting others in their questions, reading articles and posts
http://forums.psychcentral.com that are applicable to your area of concern.
Please feel free to private message me or any of the Community Liaisons by left clicking on the name in blue to the left of their post) for questions or just to share.