what good is it to ask her about that?She doesn't know it erther.

what good is it to ask her about that?She doesn't know it erther.
what good is it to ask her about that?She doesn't know it erther.

what good is it to ask her about that?She doesn't know it erther.
请她有什么好处,她都不知道erther?
erther~没有这个词汇,你看看有没有错,er好像没有the的单词

erther——个人认为是either,用在否定句中表示“也”
关于那件事问她又有什么用？她也不知道

问她那事有用吗？她也不知道啊。erther应为either