I've always known a friend has a very different more relaxed parenting style to mine but it hasn't been a big issue. there's been a couple of incidents however recently where I know she put her kids in danger and I can't stop worrying about them. I really don't know what to do. It's absolutely none of my business I know, but I can't stop worrying and wondering what if - if something happens to them I'll feel I should have said something. but what to say?