I would like to talk to the person who does think this is extreme. This is good parenting. Social media is a great deal of fun at moments, but it also can be very dangerous. It is said this young lady is only 11. She has no clue to how she potentially put herself in danger by posting a picture of her drinking. I am sure that this was not her only punishment. Obviously she has a parent that is trying to teach her right from wrong.
Good for this mom or dad. Every parent should be paying attention to what their kids are posting on social media. Personally, I think that 11 is too young for Facebook, even if you are monitoring it. But this parent thought their child was mature enough and when she realized that she wasn't she has taken the privilege away. I have this feeling it will be a while before she is posting anything on Facebook again.