The blame would fall on the master I think, for not explaining how to teach and just send him/her to teach lo/ specially knowing how she is.
That'd require her master to know first what she doesn't understand in how to teach.
Her common sense was already off the norm so there's no way to really know how 'basic' you have to get.
She's trying to dig down in layers hoping to figure out which layer is good enough for students to get.
And ironically since nobody ever admit 'this is too hard' she never know and just stop at 'this seems like I've explained enough' point until she find examples like in this chapter to 'learn' from.