I’ve been in that boat except at the other end, first off I’m going to recommend taking a look at a few of Eckhart Tolle’s videos or perhaps books, he sure thought me a thing or two on how to deal with all my problems, especially those of the mind. When I was younger I suffered from consistent negative thinking aka self inflicted Depression, I considered suicide on numerous occasion throughout my teen years but thankfully I got better thanks to people like Alan Watts which basically teaches the same sort of stuff as Eckhart. Secondly the fact that you’ve been emotionally effected by this which isn’t always a bad thing in moderation, all I know is when I was sick my mother wouldn’t leave me alone, she kept on about how I wasn’t right and how I needed help, it made me feel even worse and made me not want to get help. It can seem like a double-bind from where you standing, you might say “I can’t just leave it” or “I need to take some action” and your somewhat correct but their is a line between effective help and forcing help upon someone, I can understand how difficult it might be to stay emotionally stable when your loved ones are suffering but it’s absolutely necessary you do just that, otherwise you’ll only end up adding to the problem. Eckhart Tolle will show you how to become the observer and the neutral party opposed to getting caught up in all the negativity. I hope this helped you or at least pointed you in the general direction of help.