Very sorry for your loss.
I must admit I do wonder why it is the mother's choice and must not be criticised though. And I say that as someone who did have some cigarettes during pregnancy with ds2.
He has asthma and gets very chesty and is generally more sickly' than ds1, the pregnancy where I didn't smoke at all. Co-incidence? I don't think so and I feel guilty every day.
But back to it. What's the difference between smoking during pregnancy and smoking in a small room, blowing smoke into your newborn's face? Would that be the mother's right too? To smoke in a confined space with her baby? If you saw that would you say how very dare you criticise, it's her right to do that.
I really don't see why the mother's right to smoke matters more than the baby's right to not be exposed to nicotine, tar, benzene, ammonia, carbon monoxide, acrolein Formaldehyde, butane and the 500+ other chemicals in them.
I wish to god I'd not smoked while pregnant with ds2 and when I see a pregnant woman smoking I could shake her!
And I know, you're not allowed to criticise, you're not allowed to judge, blah blah blah. I don't care. I do judge. It is no different to, like I say, lighting up and blowing smoke into the pram.