Context: Just to say that my sister is OK . She 's home now - they could n't find out what was causing her stomach pains and the high white blood cell count . She stayed overnight and for the next day and then they said she could go home and see how she went . If she continues to get the stomach pains we are going to take her back to the GP and see if he will refer her to a specialist or something . Went to Brighton today to meet Louisa .

Question: What 's a possible reason the writer 's sister is home now ?
Options:
0. Because the doctors want to see if the problem goes away on its own .
1. None of the above choices .
2. Because she had a white blood cell count .
3. Because she had stomach pains .
Answer: 0