Based on the context and the answer, generate a question. 

Context: This evening , she was playing with the neighborhood kids and she skinned her knee . She came over to show me and did have a concerned look on her face but she continued to play . When we went inside about 20 minutes later and it was just her and I , she broke down crying saying " knee " and pointing .

Answer:

She wanted to put a brave face on in front of the others .



Why did she react the way she did when she was outside ?