Would you say something if your cousin was smoking while pregnant

Yesterday my cousin found out shes pregnant. Our whole family is over the moon since she’s tried so long. Well she’s still smoking and not bothering to quit right now. She claims that since she’s so early it won’t hurt the baby but i have had two kids. I know how vital the first trimester is. I really don’t want her to harm the baby since it took her 8 years and she’s 33 so having to wait long again wouldn’t be good

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