What Medication Is Suggested For Fever And Platelet Count Of 40000?

My mother is of age 72 and very healthy & active. No alergy and not even admitted in hospital before and no major illness expect Hypertenstion BP, that too identified only during the age 71 and doctor always state that her BP result is quite normal and matching her age, nothing critical. Initially my mother got fever and General Physician prescribed few tables and stated that she may have viral fever. Soon she recovered from fever but was suffering from severe body pain which she never experienced before, 2 days passed and since she is not recovering from body pain and becoming too tired the General Physician given saline and stated that she will be alright after 4 hours...but all of sudden her breathing pattern changed and no improvement after 4 hours hence the GP suggested to take to big hospital and diagnoise for other reasons like ECG test etc. I have admitted to the emergency ward, during that time my mother is slowly getting into unconcsious and unable to speak as well. The initial test stated that her platelet count is 40000 (normal range is 1.5lacs to 4.5lacs) and hence doctors suggested to admit to ICU, after 10 hours of treatment her platelet count dropped to 13k...after 24 hours they declared that she passed away....what would went wrong during platelet count dropped from 43k to 13k....would possible mistake the team have done. Instead they would have transfusion platlet to her and they should continued analyse the reason for dropping platelet....Kindly input as i need to followup further on the reasons which was not supported her to recover.
Note: During treatment most of the reports came negative (jaundice, dengue) and since platelet count is dropping, the test related to organs showing variations in results (lungs etc)


Please input.