I think GRANIX is just another formulation of G-CSF. The more traditional one that I have seen here is Neupogen. I don't know what the difference is between the two formulations though.
Is your mom's pneumonia under control? Has her liver functionality improved? Is she still in the hospital? If she still has an active viral infection, that will lower her WBC.
Was she ever tested for hepatitis?
52 yo female, dx 9/08, AA/hypo-MDS, subclinical PNH, ATG/CsA 12/08, partial response. Tried slow cyclosporine taper over 4+ years. Platelets fell, so back on cyclosporine. Trisomy 6 clone in 5% of cells.