First, my deepest respect for your perseverance. Wonderful. If the earlier testing was comprehensive and confirmed LD, you should not need additional testing.
You have been incredibly persistent. You need assistance from an attorney knowledgeable about your right to accommodations under the Americans with Disabilities Act.
You may need a current diagnosis in order to take the test with accommodations. The following articles have information about educational testing for adults:
Thanks for going the extra mile to help this young woman. There are actually several underlying issues related to your question. Can this student use any kind of computer technology?