Why don’t woman who drink heavily while pregnant and birth a child with fetal alcohol syndrome serve jail time?

I knew a guy who has fetal alcohol syndrome. Long story short his life is fucked. He had growth problems, bone and join deformities, his face looks bad, and extreme learning disabilities.

Why does the mother serve no punishment for this? This is on the scale of attempted murder technically, this is how much she fucked up his persons life.

I understand your body your rules, but when it affects the baby after birth, shouldn’t there be rules?