She had been dead when she fell back on the bed and she stayed dead through all the effort to save her , while blood and tissue bubbled out of her and the suction clogged with particles spilling from her lungs . Everyone did what she knew how to do to save her . She could not be saved .
According to the above context, answer the following question.
What may be the reason why they continued to work on saving her ?


None of the above choices .