Listen up, faggot.
This bitch is not your little sister. You don't know her, and you will never know her. Her history of abuse might be true, it might be fabricated. Does it fucking matter either way?
No.
There are millions of victims of abuse, what makes this one girl so fucking special? She's not hideous and is privy to some internet memes. So fucking what? She's 15, on the internet, posting pictures of herself practically naked while browsing 4-chan. Any damage caused as a result of 4-chan trolling her is her own fucking fault for being too stupid to keep her personal information private.
It's not your goddamn job to fix her life or to defend her. If her life is as shitty as she makes it out to be, who among us gives a flying fuck? Most people have shitty lives and keep their mouths shut about it. I'm sure this girl has friends or other people in real life to help her cope with her issues (again, if they're as real as everyone believes) or else she would have offed herself already.
TLDR; You fucking neckbeards will never mean shit to this random nobody. She's getting trolled by 4-chan because she's too fucking stupid to keep her dox private. Interact with millions of strangers online and you're going to get e-raped. Just fucking deal with it.
You faggots are all pathetic.