You dear soul, I am so sorry about the way life is headed for you right now.
Reading your last post I am so reminded of the late-stage alcoholic, or the crack addict. Which is exactly what your wife has become right now...an extremely damaged and hurt person who absolutely cannot face her pain straight on, and therefore must run and hide from it. She is bringing all of this on herself, she is choosing it. And IMO you really should make no attempt to shelter her from it. Let her feel the consequences of her choices. She is choosing poverty, squalor and danger rather than choosing to look at herself...what does that tell you about how afraid she is inside?
I'm so very sorry that YOU are having to bear some of these consequences. I hope that to the extent legally allowable you will refuse to shoulder them for her so that she has a chance to experience them and hopefully come out of her crisis.