I am looking for resources or a grant to fund a computer with the jaws technology for a friend. She is a single mom of a teenager and is currently unemployed but wanting to work.

The local SS and Medicaid offices, and the Education Connection online, are your first steps, I think. It's quite possible that the cost can be paid by Medicare or Medicaid, and the EC can do the training.
After that this would be a local search of community programs, the town social worker, churches, and libraries.
I take it she needs the $895 version. You don't say how impaired her sight is. There are countless other products to enlarge the screen and so on.
Price List NanoPac

What country are you in? In Canada The Lions Club may help, as well as the CNIB. You may also be able to get it through the government if you have paperwork to prove a disability. If you are not in Canada I am not sure if any of that information will be relevant.