That pretty much seemed like their first 'defeat' so to say. After all, they lost Tamaru who seemed to be able to give some help, but guess that the author's didn't have that in mind.
Aww that sucks that tamaru died. I mean.. he died trying to get something for someone who was will. But i think his life was more important than that old lady's life. After all she has to get a blood transfusion weekly or so, so how are they going to get her next one? Why try saving someone who won't even last?
Tamaru wouldn't have died if they hadn't of gone to the stupid hospital :(