My 6 year old has congenital heart condition adhd anxiety and depression. How can I get help financially?

More than 6 months ago she began complaining of chest pains. Acting out in class in an angry way. We, meaning pediatrician and I had speculated she could have ADHD since age 2. After being checked by her cardiologist she showed signs of higher pressure across her pulmonary artery, and signs of stress. After speaking with her teachers about her learning abilities and her ability to focus and her constant fears and worries. Her doctors and I made a difficult decision to try medication to help alleviate stress on her and help her to learn without causing further damage to her heart. Before medication was started she was also seen by several psychologists that agreed she had ADHD accompanied with extreme anxiety and signs of depression. At this point medication(stimulant) and therapy is necessary for her survival. In the process of helping my daughter I had to take a leave absence, which exhausted the 12 weeks of FMLA for the year. I was given a choice to return with no time missed or resign. I had no choice but to resign. Since this time her medication has been changed for the 4th time and is working very well, also had to add a 2nd medication in afternoon to stabilize her mood. Also, have found she has learning disability as well. She is still required to see her psychologist every week and her cardiologist and pediatrician every couple months. I am not a free loader have always supported my way. I am now unable to do this, is there any financial help for families with a child that has a less conventional form of special needs?