Relation betwee WBC 40000 and blood cancer

[Arqam]

My 15 years old cousin feels breathing problem so admited in hospital at 12:30am. BP 11O/90, PR 130, TEMP 98. She given oxygen and fluid. At 2:30am she started shouting and look like abnormal so she given injection to sleep. Morning 10:00am tests like CBC  conducted. At 1:00pm doctor said that WBC is 40000 and need to shift nearest city hyderabad's hospital. But on the way at 6:00pm she found died.
Q 1. What was the desease?
Q 2. Is this possible of deith duo to WBC 4OOOO?
Q 3. Any relation between WBC and blood cancer?
Q 4. How it is possible a healthy person die after two days of ill?

[Arqam]

Thanks for answer
    Different test reports shows following
    Neutrophils 82%
    Lymphocytes 14%
    Monocytes 0%
    Eosinophils 4%
    Basophils 0%

    Serum creatinine  1.52

    Alkaline phosphatase 348.62
    Bilirubin Uncojucated 0.51

[Dr Santos]

Hi,
An increased WBC or white blood cell level may suggest an infection ( viral or bacterial), medication side effect, disease of bone marrow, immune system disorder, leukemia and even severe allergic reaction. It would be difficult to state the disease or immediate cause of her death with out direct clinical examination and results of the diagnostic tests done. The increased wbc count may be contributory but additional information is needed. It is best that you discuss this with her attending physician to clear any doubts. Take care and regards.