A friend may be experiencing some family problems right now, but helping them solve them is not your obligation. Do not encourage them to tell you all about it, because it's none of your business. Even if you think you know exactly what they need to do to get out of this mess, bite your tongue and let them deal with it on their own. Get involved, and you could end up getting dirty. There are details you are not aware of, so just stay out of things.