I can't express how much I disagree with this point of view. Asking someone to take potentially embarrassing pictures of myself (the girl in this case) off the internet is NOT "ridiculousness". Her parents have posted toilet training photos of her sitting on a potty, naked. They've posted diaper change photos of her. And then they posted these photos on Facebook and made them public.
In this day and age where you can Google anyone's name and come up with information on them, this has to be profoundly humiliating for a teenager or young adult. According to the articles, as a teenager, she begged them to stop and they laughed at her and ignored her. Wouldn't that sour YOUR relationship with your parents? Now that she's 18 and a legal adult, she's taking steps to have the photos legally removed.
It's easy for you to say "just cut ties and walk away" but the pictures are still there. And anyone who knows her name and anyone who knows her parents can simply put her name into Google and see photos of her as a naked, toilet training child.
Perhaps you should put toddler pictures of yourself naked on the potty on a FB page that's got 700 friends listed, with your full legal name on it, and open to public view ... and then say she's being "ridiculous".