I'm so sorry to hear about the new diagnosis, SW
Don't totally give up hope, though. Although the low RBC count is disturbing, the platelets increasing is a good thing and the WBC count could just indicate a response to an infection.
My heart goes out to you
I know how difficult it is to care for a sick furbaby, especially when you're not sure exactly what's going on! If she's comfortable that's good. Treasure every minute and love her up!
You're both in my thoughts and prayers. I hope you can find something tasty to tempt her appetite!