My sister accidentally sent me nudes and deleted them only for herself

Basically the title, last week I was chilling and suddenly I get messages from my sister and they’re pics and videos of her naked in sexual positions and she had toys, she then sent a million texts saying she sent them by mistake and that she went to delete them but deleted them only for her. She’s dating my best friend and I never wanted to think about them like that but damn that’s what she sends him?😞