I'm working, I've also been a single mother (divorced), I worked then too, long hours, difficult childcare, very demanding job, and? 
I have a good job, Big 4 firm, good pay etc, own house, car, children at private school (works for me, understand not everyone else's choice)... why would I think you don't have to work for a living? 
I simply think I was incredibly lucky to have a supportive family that showed me the benefits of education and gave me something to aspire to. They are also very WC but that's by the by.