Do I tell her?

My abusive ex made a new snap right before we split so I never deleted the old one. We broke up on my birthday, August 1. He had another girl move in that week. I’ve heard he’s strangled her with a cord, so he’s obviously not changed... then I wake up to this from his old snap... these pics are crazy intimate. Let me say, I’m over him and I am healing. But I feel like I need to tell this girl what’s up... because I know exactly what he’s doing to her and how she’s feeling. Do I tell her? Or do I let it go? Look at the dates....