I suspect we've all seen My sister absolutely refuses to learn math by now - it's lodged at the top of the Stack Exchange hot questions list, it's been tweeted, it's got 27k views and hundreds of votes, etc etc.
But what I'm not clear on is whether it's on topic.
In the on-topic-ness FAQ, it's not in any of the off-topic groups, BUT also not in any of the on-topic groups. I'm inclined to consider this makes it off topic, but I see it only stayed closed for four hours after it was for that reason closed, suggesting that there is significant disagreement.
Personally I could see it perhaps falling under "Understanding mathematical concepts and theorems", but only if it was the learner coming here to ask for help. The question as it stands is a teaching question, and therefore more suited to the (currently still in Area 51) sites Education or (if relevant, which I think it might be) Homeschooling. The question's own tl;dr asks quite explicitly How do you teach..; and indeed not even "how do you teach [mathematical concept]" but rather "how do you teach someone who doesn't want to learn". This isn't about math. Relevant comments and answers would be respectively about the teaching relationship, and pedagogy in general.
Bearing in mind that popularity alone is not considered a sufficient reason for a post's existence at a Stack Exchange site, why is this one still here?
I did flag to this effect, which was marked helpful, but I want to know if/why this is considered an appropriate question for MSE