Cannot afford Neupogen. What can I do?

My grandmother started her first Chemotherapy session last week. Unfortunately she wasn't told she would need a drug called Neupogen as part of treatment--they simply gave her the script to fill afterward. The pharmacy did not carry it nor will her insurance cover any portion of it. She was told she must pay $6,000 up front for any help. What can I do to help? Doctors arent returning phone calls, hospitals patient advocates also not returning calls. I understand there is an alternative medication that can be taken daily rather than the single neupogen shots between chemo sessions---however the doctor won't give that script. I'm trying to help from a whole different state than where my grandmother lives! She is currently trying to get medicare part B. In the meantime, more and more time is ping that she needs this drug...she should have taken it last week. Besides going to the ER what can she do?