I reckon you are not thinking straight.
After the father has abandoned and the mother decides to keep her child without income she must leave her child with a guardian, go to work in the city but the minimum wage of around 12000 month is not enough to pay for accommodation, guardian, food, clothing, electricity, etc, now she finds herself working in the sex industry.
Please do the maths, a 12k baht monthly income from a job at Big C won't make ends meet.
We are back in this horrible circle.