Anna's a D-List celebrity, and the previous Duggar books didn't sell that well. So I'm not sure she would get that much in an advance. Let's say, generously, $120,000 prior to agency fees, taxes, and paying the ghostwriter, netting to around $60,000 - paid in installments over two years. It's not nothing, but I'm not sure she could support seven kids on that.
She could and should probably start looking into doing speaking gigs, though, to supplement her income.
Maybe, but a) the prosecution has plenty of other evidence placing Josh at the scene of the crime, discussed in the arra