sounds like she is looking to you as the provider of income. is she at least doing the housewife part?
talk to her and ask her what her goals are. if she tells you she wants to be a housewife and you're not looking for one, tell her that shyt doesn't fly with you and that you can't afford that. if she wants you to have an income that can sustain the both of you, she'll have to work now so you won't have to keep being underemployed.
if she wants to work, tell her she needs to get on her grind, because your finances have gone to shyts.
if she tries to throw shyt in your face, stay calm and tell her it's not about who is right and who did what in the past, but about what needs to be done to ensure that both of you have a future ahead of you that isn't filled with piece of shyt jobs and debt. it's also about what needs to be done to raise your child in a prosperous environment.
if she can't get down with any of the above, leave.