Talk to Cancer - Oncology on Ovarian Cancer Patient

My mother diagnosed with Ovarian ca. in March 2020 then she got 4 chemotherapies and after that her oncologist suggested for Hysterectomy and here gynaecologist did surgery and after that she recovered and after 3 months again her oncologist did 4 chemotherapies she got so better total 8 done now after last chemotherapy her red blood cells are very low around 2.3 ... her targeted chemotherapies are left dr. is not here and her condition is not good having vomiting she cant eat anything and feeling so weak ... please any dr. suggest something why this is happening her bp is 137 and 77 ..