How do I handle my friends' parenting style?

this is a difficult situation to figure out, for sure. I always struggle with it. The response I try to remember when talking with my daughter (mother with 1 child) is to ask her "Can you tell me why you do that?" or "Is that what happened to you?" or something that is directed toward her life experiences and not her behavior. Before I offer any advice, I try to remember to ask her if she is in a place to hear a new idea that I would like to share.