>>/76307/
its pretty obvious theyre using an underage girl to troll. discord servers have done similar things, where they make an underage person advertise their server by trolling.
it triggers people cus theyre underage, and the person trolling gets some thrill from their reaction. 
if im being honest the whole thing is really annoying but nothing stops a minor from posting themselves on the internet if they choose to, so theres no point in trying to do anything about it.