Helping A Mother And Son

My son and his mother who I love dearly are going through a very rough time right now, due to family circumstances I cannot help them how I wish to and I have been feeling trapped. His mom is a very hardworking kind hearted woman who would give her last just to see him happy, but she is only working one job right now and struggling to handle her bills and go to college on top of that. She's doing everything for our son and I'm trying my best to send her money whenever I can, but like I said before due to family circumstances I can only do so much, it got so bad I had to leave their side and have not been able to rejoin them for 3 years. I get pictures of him when she sends them to me and I also try to talk to him when I can so that he remembers who I am in his life, however, it has not been easy. I have not had a peaceful nights sleep for three years knowing that they are having so much struggles. Please help me to help them get the money they need to pay bills so that my son and his mom don't get put out on the streets.