Financial aid sources for dependent, disabled student?
This response is US-centric. 

It is most unfortunate that the local university was unwilling to provide any kind of financial aid except for loans. However, this need not spell the end of your academic journey. Here are several avenues you should explore before giving up.  


Begin your higher education journey at a community college. They offer lower tuition rates than almost any other institution is able to do. 
Apply for federal financial aid using the free FAFSA application. 
Investigate other financial assistance and scholarship opportunities. As a disabled person, you should be eligible for various scholarships. There are various free scholarship websites which will permit you to find scholarships suited to your specific situation and interests. Scholarships.com and Scholarship Experts are among my favorites, but there are many other free services available, including this comprehensive list of external scholarships provided gratis by the University of Phoenix. 
Make friends of the folks in the financial aid office. They are usually more than happy to walk you through the process of applying for federal, state, and local financial aid and may help you find other sources you hadn't considered or were unaware of. 
Find out where the community college Foundation Office (or similar office) is located and make a special effort to meet these people. Their job is to match students with sponsors and the rewards for your efforts can be substantial. (For example, they once put in my application for a scholarship I didn't know existed, and gave me half-a-semester's worth of tuition without any effort on my part!) 
Finally, contact a counsellor or other mental health professional. Depression is a serious illness. Get help!