doesn't she的回答

she has read the book, doesn't she? 她看过这本书了，对吗？
Yes, she has 对，她看过了
No, she hasn't 不，她还没看
如例子所示，回答时看前面部分就行了
如果换一下：
she hasn't read the book, does she? 她没看过这本书，对吧？
yes, she has 不，她看过了
no, she hasn't 对，她没看过
就按回答后半句理解就行，yes是对问题‘是不是没看过书’的肯定，然后告诉发问者她看过了，反之亦然。
我这样解释可以理解吗？不行的话可以再解释