Frank, your wife is a liability because she contributes nothing to your household, brings nothing positive into your family, contributes nothing to your life personally and little (that I read) to your daughters. Instead, she takes and she costs.
I think you are way off on this one. She takes care of the kids, the house and everything else. She brings in some money, she's just not a great businesswoman, but she isn't a negative cash flow.
She has tried her best to be positive. She's just burned out and wants something different. But she's given up on us 'working'.