I don't know where you are located but this firm has an office in Joliet and other places.
http://www.rabinsslaw.com
A friend that is in bad shape with MS was referred to this firm by her doctor. I drove her there for the appointment and they seemed very nice.
She was told to quit her job before filing, which is difficult, but once approved they will pay you back to when you stopped working.
My friend was also told that about 70% of cases are denied on the first attempt. Then you have to file an appeal and a big percentage are still denied. The third step is a hearing.
The lawyer told my friend they fully expect that she will be denied on the first application but she might get approved on the appeal and if not they felt they would be successful at the hearing.
I strongly feel that my friend should be approved and cannot belive they would deny her because she is very crippled. The problem is a lot of fraud exists and it makes it difficult for those that are in need.
I wish your friend well.