Hi Arista. Welcome to PC. You sure are dealing with a lot sweetie. I can't give you any advice on where to seek help since I don't live in the US but I'm sure that your GP should be able to point you in the right direction or you have also been given some wonderful suggestions by others who have posted before me.
I agree that family councilling should be considered, for you, your son and daughter. Your daughter certainly needs help even if she is quiet and doesn't seem to be upset about the situation. My family didn't get me therapy for a trauma I suffered with when I was 9 because I 'appeared' ok and never spoke about it, but here I am today as an adult dealing with it now in therapy. I'm not suggesting that you aren't thinking of your daughter but just wanted to point this out to you. Obviously your son needs therapy too. I don't recall you mentioning the ages of either one of them. Therapy for you would also be good because you're dealing with the loss of a husband and the situation between your son and daughter. You are being pulled in so many directions and having to deal with all of this on your own. Please seek medical help for your depression and continue to post here. We'll be here for you emotionally and help you out the best that we can. Anyway, you can lean on us for support every step of the way. My heart goes out to you and your entire family. Good luck in finding the best resources that you can for your family. Let us know how things are going. I'm glad you found a soft place to land by coming here and I hope you will continue to post. (((((((Arista and family))))))))