@Jacquiline the hard thing is she lives with the family we visit regularly and the only way we think she will take it seriously is if we go to police or a lawyer for possibly harassment and posting a minor without parental consent
I don’t post on socials (worked in jails so totally agree with no faces on social media) ~ but I don’t think it’s a police matter. Can you report the image to the platform for removal??
Stop seeing her. She’s crossed your very clear boundary multiple times. Getting police involved is a bit much (not sure they’d be able to do anything) in my opinion, report the photos she has posted and remove her from your life.