The one thing that parents have in common is that they all parent differently. You may be a free-range mom, while your best friend is a helicopter parent. You may be OK with sodas at dinner, while your neighbor only allows water to pass through her children's lips. There are as many different ways to parent as there are parents on this earth. But, what if what you observe isn't just a difference in parenting style, but a behavior that's potentially harming her children? Would you know what to do when you think your friend is messing up her kids?
It's such a difficult position to be in. Do you confront your friend or do you mind your own business? Getting involved will almost certainly cause tension, and maybe even destroy your friendship. No one likes to feel judged, and most people will act defensive and lash out. You may even be served a helping of your own parental flaws and imperfections. For these reasons alone, you may consider staying out of it.
However, if you have come to believe that the way your friend is behaving is negatively affecting her children, especially if you suspect abuse, there are some steps you can take.