Short answer: You are answering why?
Why doesn't she want to go out? She doesn't want to go out because she's in a very bad mood. She knows that she won't be good company.
Remark
The sentence after the ; (semicolon) does not begin with any kind of connective word. If you put a noun in place of she, you would see that the last part after the semicolon is a complete sentence.
The very cruel event named the lottery took place in a small American town. In this town there was a simple yet horrendous way to decide just exactly how to keep peace. Every year after a three step process someone was chosen to be brutally stoned to death by the people in the village. Tessie was the one who happened to be chosen and she did not want to die. Tessie is the character vs. society in this passage. Making the conflict the main part of the story her getting stoned against her will. The process was initially screwed up because Bill only had one household n the family, going straight towards the randomized draw in the black box. These changes point to the idea that the lottery is a long-standing tradition in the village, something they have been doing for years and years. Traditions that have been done for so long are unlikely to change.
