What should I do ?

I don’t know if this is true I’m

Just curious but I seen a mom smoking weed and she’s one of my friends and she also breastfeeding. Is that even okay or ? Cause I thought you wasn’t supposed to do that during breast feeding your child. And if your not is there anyway I can tell her it’s not good ? Or if it is good should I share my beliefs ?

What benefits does that have . She told me she only smoked it that one day but still. Help any one. Postpartum moms do you know anything any way to go about. I know it’s her life but I’m her friend