In South Carolina, a single parent with one child in childcare needs an hourly wage of $24.20 to pay basic bills, according to United for ALICE. (Stock photo via Getty Images)In my work, I keep watching different women arrive at the same dead end. The details change, but the underlying story rarely does. It goes like this: she gets the job and then loses it before the 90-day probation period because she couldn’t make it through with zero days of…