Why do you think laws and rights
should be written with a formal
tone?

The formal tone first shows that these must be taken in a serious note, you wouldn't want a law to be written like "Guns are bad cuz they harm people, so no more guns."

Also when writing in formal tone you are more likely to elaborate and close the gap of free interruption.  

Explanation:

the answer is, a) she is angry with elnora for not standing up for herself.