<p>I don't have much to add - everyone has already given good advice - but just wanted to let you know that I am SO sorry to hear you have to go through all of this. It may sound strange, but it sounds to me like your mother may have a serious case of depression and is using her trips and gallavanting as a way to dull the pain. That doesn't make what she is doing right, of course, but it may help explain some of her irrational actions since your father died. I doubt I need to say this, but keep in touch with your brother, and try to give him as much support as you can, for while it may be hard for you, he is probably going through even more. And, keep posting here. While we can only be your cyber-parents, we're here to listen when you need us.</p>